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PC won't turn on. Fans spin for half a second and then turn off.

Question: PC won't turn on. Fans spin for half a second and then turn off.

Good day!

My cousin asked me to troubleshoot the problem of his desktop. He was telling me that it is not turning on. I was caught by surprise when i turned on the PC when suddenly I heard some kind of explosion. It sounds like a blown capacitor or something to that effect. I immediately unplug the power cord from the wall outlet. I checked all the capacitors and looking for any damage and fortunately it's all ok. I smell the PSU to check if there's any short circuit occured and there was no foul odor or something. I removed the PSU from the casing for and opened it for inspection. I found out that the fuse exploded and broke into 2 pieces. I don't bother to repair it but instead I bought a new 700 watts PSU.

After replacing the PSU I turned on the PC but i found out that the CPU fan will spin for half a second and turn off. Led green light is on but no post or beep sound. I did some troubleshooting and these are as follows:

1. I removed the motherboard from the casing and put it on top of the table with cardboard underneath.
2. Clean the RAM stick and tried on other slot.
3. Clean CPU heatsink and fan since it was clogged by dirt and replace thermal paste.
4. Replaced the CMOS battery and move jumper pin 1-2 to 2-3 for about 2 minutes.
5. I turn on the PC without the video card, hardisk and keyboard.

SPECS:
Motherboard: asus h81m-c
CPU: Intel core I7
RAM: 8gb

Btw, prior to the above steps, right after replacing PSU I just clean the RAM and turn it on but the fan will just spin for half a second and turn off.

Any help will be highly appreciated.

Thank you

Sent from my GT-I9205 using Tapatalk

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Preferred Solution: PC won't turn on. Fans spin for half a second and then turn off.

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Relevance 79.46%

Hiya,
Here's what has been happening:
PC won't POST. I can't get to Windows or even the BIOS.
This has been an ongoing, intermittent (on/off) problem which seems to have now become permanent.
There are no beeps when powering on.
I replaced the PSU with a new CoolerMaster one in an effort to resolve the issue. No luck.
I've unplugged almost everything from the motherboard and tried powering on, which includes:
HDD
RAM (2 sticks: 4GB, 2GB)
CD/DVD ROM
Peripherals (including, embarrassingly, the Power button...)
Mobo fan (which is the one that wavers every few minutes)
The only items I did not unplug/disable are the CPU fan and any onboard ones, e.g. integrated graphics.

Some history now:
The PC has been having this problem for some time now, i.e. months. Eventually, it would POST and then go to Windows until Friday. Now, it just sits trying to POST. The motherboard fan will waver from slow to fast every few minutes. (I timed it and the wavering has no exact pattern.)

Side observation:
When removing the 4 gigs of RAM, leaving only the 2 gigs, PC freaked out and turned on and off several times before finally POSTing and going to Windows normally.

Today, I removed the CMOS battery for quite some time, maybe an hour or more. The PC was unplugged when removing it and after so I hit the power button. After popping the battery back in and turning back on, I still get nothing.

Can I turn the PC on with the CMOS battery removed? Do you think it would help ... Read more

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A few months ago i built a system through a popular computer company, ibuypower, and was initially pleased with the performance of my PC. I was then forced to take a few months away from the system due to work, during which it was stored in a safe dry location. Upon returning the system had the issue stated in the title. I have replaced the power supply with a far better one (went from 450w to a 700w) and the same issue peristed with the new power supply, which works with the tester it was shipped with. I've read about it possibly being the Ram, so i have ordered a 16gb ddr3 ram upgrade (2x - 8gb sticks) and they should be here within a week. I also read that it may be the CMOS battery but those are unable to be shipped through the mail so im having trouble tracking those down here in Japan. If somone could help me figure this out i would greatly appreciate it. I've cleaned and tested everything i can and i can't find an issue other than it physically wont function. Also, in case anyone was wondering this thread was written from my laptop, not the PC.

Much Apreciated
 

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Hi,

I am having trouble getting my new system to boot and am so frustrated. I dont know what to do.

CPU= AMD 3700+ (ada3700bnbox)
mobo= Asrock 939s56-m

When switched on the fans all spin once and then stop. There are no bleeps.

It is not the PSU. It cannot be... I have tried several. It is not the ram. I have tried many sticks.

The only thing I can think is that the mobo does not support this processor without a bios upgrade- thats what Asrock's website tells me. But I caanot upgrade the bios without the system booting up.

Could this cause the system to act as it is doing? Or is there some other possible explanation?

Thanks for any help
 

Answer:New system wont boot... fans spin half way and stop

do you have case fans? do they continue to spin ? or just spin once, if only once it has to be a power issue
 

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Relevance 92.25%

I have a bit of a strange issue with my computer. Forgive me if I'm a little too descriptive, but I'm not sure which details are relevant and which are not for such a problem. First, the specs:

Model: eMachines T2984
Operating System: Windows XP Service Pack 2
Processor: Intel Celeron D Processor 340, 2.93 GHZ, 256K L2 Cache, 533 MHZ FSB
Power Supply Unit: Bestec Model: ATX-250-12E REV: P7
Motherboard: I can't tell, but it appears to be an Intel motherboard by the number of Intel labels on it
RAM: 512 MB DDR SD originally, added 1 GB a couple of months ago
Let me know if you need anything else...

Yesterday, I got home from shopping around 1PM, and I tried to start the computer. I pushed the power button, and nothing happened. I checked all of the cords, and they were all plugged in. Not knowing what else to do, I opened up the case to see if there was something obviously wrong. The only thing that I noticed (other than a bunch of dust) was that the power supply unit was still hot. I shut the computer down about 5 hours earlier after about 20 minutes of use, so it seemed strange that the power supply was still hot. I unplugged the computer just in case there was some sort of fire hazard.

At this point, I called a friend who suggested that the problem might be with the motherboard or the power supply unit.

A few hours later, I plugged it back in to try to get it to work. As soon as I plugged it in, the entire unit suddenly started "running" by itsel... Read more

Answer:Computer Doesn't Turn on, Fans and Some Lights Turn on Automatically

I would suspect that the Power Supply Unit (PSU) is going south. If you have a spare one laying around, install it and see if the problem goes away.
You can buy a new,better PSU from Newegg for about $40.00. I have used a Thermaltake 430 watt in one of my machines for some time now and it works well.
You will have to check the size of your PSU to be sure a new one will fit into the eMachine.
Here's the page with that PSU on it. It's the last one on the list.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010320058+50001379&name=Thermaltake
 

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Relevance 91.43%

I can't turn my computer on. The fans and lights turn on for a second and then turn off. a few seconds later they'll turn back on and then turn back off. I've had this computer for 4+ months now, i built it myself. it recently started doing this but i'd just turn off the PSU (Power Supply Unit) and turn it back on and it woould fix it. now it doesnt fix it anymore. i've re-slotted the RAM (Random Access Memory) and pushed it in firmly, but that hasn't done anything. i've tried different power outlets and pushed everything into the MOBO (Motherboard), i havent messed around with CPU (Processor) because that's just a pain in the a**... i was wondering if there was anything else i could do before having to take it into a local repair shop, lol.

as for my computer specs

CPU (Processor): Fx-6300 AMD
GPU: R9-270x AMD
RAM (Random Access Memory): 8GB Ballistix sport
MOBO (Motherboard): ASRock 970 Extreme3 R2.0
PSU (Power Supply Unit): Corsair X500 w 80+
Case: Rosewill GALAXY

thanks
 

Answer:Fans turn on, lights blink and then turn off/on repeatedly.

First, I would unplug everything that isn't necessary. Everything external except for the keyboard and monitor. Internally, just leave the CPU, RAM and video card installed. See if it turns on. If not, you might try and test the power button. Disconnect the power button from the mobo. If the pin headers allow for it, use the reset button as the power button. If not, you can use a flat head screwdriver to power on the computer (cross the two pins for the power button with the blade of the screwdriver). If you do this, just be very careful. Touch only the power button pins and nothing else! You could easily damage components by touching the screwdriver to the wrong thing.

Some motherboards have a power button right on the board that you can press to power on the computer. I looked at a pic of your board and didn't notice one.

If that doesn't do it, plug the power button back in. You might try and play around with the RAM. I don't know if you have 2 or 4 sticks of RAM, but try and boot the computer with only one stick of RAM at a time. If there's a bad stick, you'll find it through this process of elimination.

If none of the above works, then it might be a bad PSU.
 

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Relevance 91.43%

I can't turn my computer on. The fans and lights turn on for a second and then turn off. a few seconds later they'll turn back on and then turn back off. I've had this computer for 4+ months now, i built it myself. it recently started doing this but i'd just turn off the PSU (Power Supply Unit) and turn it back on and it woould fix it. now it doesnt fix it anymore. i've re-slotted the RAM (Random Access Memory) and pushed it in firmly, but that hasn't done anything. i've tried different power outlets and pushed everything into the MOBO (Motherboard), i havent messed around with CPU (Processor) because that's just a pain in the a**... i was wondering if there was anything else i could do before having to take it into a local repair shop, lol.as for my computer specsCPU (Processor): Fx-6300 AMDGPU: R9-270x AMDRAM (Random Access Memory): 8GB Ballistix sportMOBO (Motherboard): ASRock 970 Extreme3 R2.0PSU (Power Supply Unit): Corsair X500 w 80+Case: Rosewill GALAXYthanks 

Answer:Fans turn on, lights blink and then turn off/on repeatedly.

You can try a new  RAM stick.What you describe can be: Anything overloads the PSU, or a failing PSU Bad memory in the low region. BIOS  can't run without it. Bad CPU, or heat sink not in placeDisconnect the HDD and the DVD drive. (Power off, of course.)Power on. Does it  show the  BIOS?

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Relevance 91.43%

Hi!
I have this issue that when I turn on my computer, the power LED does not turn on but you can hear the fans working properly. I don't the issue and I'm not much of an expert with computers. Please help me solve this issue because I'm completely clueless.
 

Answer:Try to turn on my computer but only the fans work and the power led does not turn on

How old is the computer, what was the last change you made to the computer and when you last shut it down did it shut down correctly?
 

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Relevance 86.1%

Hey all I'm new to this forum but I've built a few computers in the past but have never experienced any problems like this.

Case: Powerspec Cooler master case
Processor: Intel i5 750(quad core)
Motherboard: Gigabyte H55M-UD2H
Powersupply:OCZ 500 watt Mod X Stream-Pro

Here are some pictures of my build and a video of what is going on.

Video: youtube.com/watch?v=UbuFZJQnlds

As you can see the PSU, CPU, and Case fans are turning on and the Motherboard LED lights are blinking and then they quickly turn off. I dont think its a problem with the Power Supply because I have already returned one with the same issue thinking it was defective.

Pictures:

wont let me post pictures =/

Any help is appreciated, thanks for your time!
 

Answer:CPU and PSU fans turn on but then quickly turn off as does everything else

Does your current BIOS version support your CPU?

Your 4 pin power connector looks to be missing.... Top right of the video 8secs in.
 

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I bought a USB ethernet adapter for faster speed and also to connect to routers using ethernet cable for router setup.  How can I turn the Spin3's wireless off without disabling bluetooth which I'm using for my bluetooth mouse. Going into airplane mode will not work for me since it turns off the bluetooth as well as the wireless.  I'm not using my laptop on an airplane.  I'm using it at home and to setup other people's routers. I know how to disable the wireless via Win10's Device Manager but that requires several steps.  Is there a quick way to turn the wireless only off on the Spin3 ?













Solved!

Go to Solution.

Answer:Spin 3 - How can I turn the wireless off without d...

Hi,Go to Settings, Network and Internet, select WiFi from left pane and try switching Off.

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While trying to restart my Acer Spin 7, nothing happened (screen kept showing "restarting").  I pressed the power button and the screen went blank. Now, the blue light is still on and doesn't go off even when I press the power button.  Has my hard drive crashed?  Is there an alternative way to turn off my computer or back on again? Thanks in advance  













Solved!

Go to Solution.

Answer:Help! Acer Spin 7 Won't Turn On or Off

Problem solved. Reset button on bottom of computer. Use a paper clip, press for a few seconds to reset.

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How do you turn lighted keyboard on and off?













Solved!

Go to Solution.

Answer:how do you turn on lighted keyboard on Spin 5

Thankyou for your reply. The Spin 5 keyboard is apparently not a true lighted keyboard as I know of. The Spin 5 has miniture pin hole size dots under the keys that light up when you press the function key to turn on the pinhole lights to function as a lighted keyboard. It is only visible if you bend down and look at the keys from below. Maybe in a totally dark room you may find the lights useful but unfortunately the ad Acer has to highlight the Spin 5 lighted keyboard shows a ring around each key when the "lighted" keyboard is turned on. This is the kind of lighted keyboard I am familiar with from other manufacturers. Thanks for your help. 

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Relevance 76.26%

I just build a computer from an old nlx motherboard, and now it won't turn on no beeps from the bios, but the fans do turn on when i push the power button. The wierd thing is that this happend before, but all i had to do was reset it and it was fine.

Answer:fans turn on but nothing else

normally, I'de say that your Video card isnt all the way in socket. You might also want to re-seat the processor and RAM. If that doesnt work, Ide try to test each part by putting it temporarily in another system to see if it works.


Good Luck

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Relevance 76.26%

my fan will turn on

Answer:my fans will not turn on

"my fans will not turn on""my fan will turn on"Well, which is it? And which fan(s) are you asking about? Please list your complete system specs.

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Every time i plug my computer to the wall, the Fans automatically turns on. the PC itself is off but the aux fan and the fan on the MB runs? than when i turn it on about 5 to 10 mins it shuts downs? any ideas?ThanksAscer Aspire desktopcore duo 2Gig ram

Answer:Fans automatically turn on ?

To the best of my knowledge, this is a built in feature of computers to prevent themselves from overheating. In hot weather, even if the computer is off, it sometimes runs the fan for safety purposes. It's nothing to worry about.

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Relevance 75.03%

Hello, I have put a new motherboard, power supply, and processor into a computer. The first time I turned it on with all peripherals plugged in, the fans stayed at max speed and it eventually shut down. I unplugged all peripherals except for the DVD drive, and then replaced the power supplie again and and the cpu has a temp of about 124 and the fans still stay at max speed, has not turned off yet.

Any Ideas??
 

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Ok im running windows xp home edition on a hp pavilion. The fans, dvdrom, and hdd turn on, but the blue light to show the cpu is running doesnt light up, and the computer doesnt boot up, the screen stays blank, and the computer makes no noise to signal its running. I would really like any help with this matter. Thank you.

Answer:Fans and dvdrom turn on, but nothing else.

The blue light shows hard drive activity not CPU actions.Open the case after removing all power sources and make sure all drive connections are snug.Be careful in there and pay attention.

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I have to hold in the off switch to get it to shut off. Is this a CPU or Motherboard pblm. and how would I determine which it is ?
 

Answer:when I turn on puter fans run but nothing happens.

Hi relee_1, welcome to TSG.

It could be a variety of things......can you give us some history on the problem? Is this a new machine? Did this just start happening out of the blue.......have you been inside the case playing around with anything?
 

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I started lagging while playing player unknown battlegrounds. So i closed the game and restarted the computer. I then noticed the entire system was lagging. System sounds and everything. Took 5min to open taskmanager.
I then restarted again and after that it would just turn off 1min after i start it. Only thing that comes on is fans and lights etc.
I changed to different ram slots just to try. And it starts and does not turn off now. But the screens dont come on, and everything connected to USB dont come on. Ant idea What the issue can be?
i7 5820k Corsair rm750x 750w Crucial ddr4 2133mhz 16gb MSI geforce GTX 980 MSI x99a raider Windows 10

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Relevance 74.21%

So I built a budget gaming computer one and a half months ago and everything was working fine until 2 days ago. Initially, the computer ran Civ V and Shogun 2 just fine.

AMD X4 760K
MSI A78M-E35 FM2+
EVGA 896-P3-1264-A3 GeForce GTX 260
Kingston HyperX 8GB 240-Pin DDR3
CORSAIR CX series CX500 500W
Windows 7 Pro x64

But 2 days ago, I noticed while I was playing Civ V, the computer would suddenly reset to the bios screen and restart. This happened when I played any graphically demanding game, but not during normal use.

1 day ago, the computer started resetting itself to the bios screen during regular web browsing (no gaming), and when it was idling.

Today, I took the graphics card out and it booted (but I couldn't tell what was going on, because I don't have integrated graphics). I put the graphics card back in and it didn't turn on. I took the graphics card back out, and the computer still won't turn on. Now when I press the power button, the fans turn on and off, but the computer doesn't boot. No beeping.

My guess here is the power supply went bad. But I'm more worried if the motherboard is fried. Is there a way I can test? I don't have another computer (aside from this linux laptop I am on right now), or any spare PC parts. What can I do?

Thanks
 

Answer:Computer won't boot at all (fans turn on and off)

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Relevance 74.21%

i just finished building my computer, and it loads into the BIOS fine, and all fans are working EXCEPT the power supply fans! this is driving me mad because ive checked all my connections and i cant find anything wrong. the chassis power plug is plugged into a 4-pin, the cpu fan is plugged into the cpu fan plug on the motherboard, and the 3-pin power supply fan pin is plugged into the pwr fan on the motherboard. (the manual for the case says to plug it into any fan plug on the case). where am i going wrong!?

case: antec 350W cant remember model number
motherboard: asus a8v deluxe
 

Answer:Power supply fans won't turn on!!!

*CORRECTION*


only the back fan of the antec power supply is not running. the inside fan is running. is this supposed to happen? it makes me nervous seeing the exhaust fan of the PSU just sitting there frozen. does it only turn on when it needs to...? :suspiciou
 

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Relevance 74.21%

red light and fans work but get nothing. nothing loads and no drives open. any idea? I have a msi ms7074 motherboard.

Answer:fans and red light turn on but nothing works

Based on what little info you provided, I can only guess that the power supply is bad.

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Relevance 74.21%

This is driving me crazy. I've been out of IT for a few years now and I guess I'm a little rusty. The motherboard on my media center computer fried so I decided to upgrade everything while I was at it. I got an Intel DH55HC mobo/i5 processor with an Antec 650w 'true power new' power supply, 4GB RAM and put it all back in my old case.

After everything was installed I powered it up, the fans kicked on for about a 3 seconds and turned off. After about 5 seconds the fans kicked on. This cycle keeps going until I power it off. I get no error beeps and no video.

My first thought was a bad mobo so I exchanged it and installed everything again. Same thing happened. Second thought was the power supply so I exchanged that - same thing happened.

I tried a power supply out of another computer on the new mobo and the same thing happened. I tried the power supply in another computer and it booted fine.

Could it be a mobo/psu compatibility problem or possibly the processor?
 

Answer:New build won't boot, fans turn on and off

I had the processor tested and it was indeed bad. 4 trips to Fry's Electronics (4 too many) and the machine is up and running now.
 

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Relevance 74.21%

This is on my old PC and im trying to fix it but im not sure if the mobo is no good or the psu or what. The PC can power on as well as the fans but maybe 5-10 seconds later the fans turn off and there is no display on the screen but the PSU fan is still going.

AMD Pheonom X4 9550 Quad Core
Nvidia 9100
6 gb ram
64 bit

Answer:PC Fans Turn On Then OFF No Screen Display.

Have you checked to see if the Ram sticks are pushed in all the way?

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my computer will turn on only the fans are working but nothing else works not even the mouse and keyboard can someone help me my computer is a philips and im running xp

Answer:my computer will turn on only the fans work

Troubleshooting a Dead/Unbootable PC -http://pcsupport.about.com/od/findb...http://www.microsoft.com/windowsxp/...http://www.wikihow.com/Figure-out-W...http://www.ehow.com/how_113600_trou...http://www.sysopt.com/articles/trou...http://www.duxcw.com/faq/mb/deadmb.htmhttp://www.selfgrowth.com/articles/...http://thepcsecurity.com/panda-safe...http://www.geckoandfly.com/2008/11/...http://www.google.com.au/search?hl=...http://www.google.com.au/search?hl=...http://www.google.com.au/#hl=en&q=c...

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Relevance 74.21%

hi there
i have a laptop that both fans have stopped working since i installed a new hard drive. i put in a new motherboard and all worked fine till iputa new 80gig hd in. then the fans just stopped working. does acpi control the fans in some way? please help im desperate. thank you in advance..
 

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Relevance 74.21%

Hi. I just built a new computer, and it has 4 case fans, with lights, and 2 lighted fans on the power supply. This is in my room, and awfully bright if I leave on. I've looked into fan speed controllers, but was wondering, is there a way to have them automatically turn off when I put my computer into sleep mode? I have a clear acryllic case, so thats my biggest problem right there. Thanks.
 

Answer:Can I have fans turn off automatically in sleep

If by sleep you mean standby, then you should be able to do that. In the bios, you should be able to select the suspend mode. Chose s3 rather than s1. s1 leaves the fans on, s3 turns them off.
 

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So I've looked around for possible solutions to my problem.

My problem is I turn on my PC and I see a green led for my Motherboard power. The fans spin for just a second then stop, and no boot.

I've disconnected every component except the heatsink, cpu and fan.

I've tried resetting the CMOS by changing the jumper settings. No good.

I've tried switching the memory around. Nothing.

I've now taken the motherboard battery out and will re-insert it after this post is finished.

If that doesn't work I fear I'm running out of options.

I tried the PSU in another PC and it was fine. So I know it's not the PSU. I tried the OTHER PCs ORIGINAL PSU and that did gave the same problem.

I've read up on a couple of articles about shorting out the motherboard or power supply or something as a solution.

Is this true? It sounds more destructive than creative.

If anyone has any advice or suggestions I would really appreciate it.

This PC is extremely new. Literally half a year old. It has a BFG 850w PSU, an ASUS M8 Motherboard w/ an Athlon Dual Core Phenom 3.2GHz

It has built in SLI with two Nvidia GTX 260s

Two 1gb HDDs

it has about 5 fans including two graphics card fans.

it has 4gb of DDR2 ram.

PLEASE HELP
 

Answer:PC Powers on but no boot. Fans turn off after a second

Did this rig ever work?
 

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Relevance 74.21%

My computer recently refused to turn on. It had been working perfectly the evening before. I could not smell anything burning or hear anything irregular.

On the advice of Corsair, I bridged a green and black wire on the PSU's 24-pin connector to test whether it was at fault. Upon turning the PSU on with the two wires bridged, the fan began to rotate. So either this is not to blame, or the PSU only partially functions.

I cannot figure out what component is at fault, and replacing parts would be quite an expensive guessing game. The Corsair PSU has a 5 year warranty; however, they require me to mail it to California. Being in Australia, this is quite inconvenient and I would rather fork out for a new one. My motherboard, I assume, is out of warranty.

My specifications are as follows:
Gigabyte P35-DS3P Motherboard
Corsair HX-620 PSU
4xCorsair DDR2 6400C4 (4Gb)
Gigabyte 8800GTS 512Mb (G92)
Antec P182 Tower
Intel E6750 Core2Duo 2.66Ghz
Asus 1814BL 18xDVD+-RW IDE
Western Digital 320G SATAII 7200 rpm HDD(Primary)
Seagate 250Gb SATAII 7200 rpm HDD(Secondary)

I purchased/built it on the 19th of December in 2007

Thank you for any assistance.
 

Answer:Computer will not turn on - no fans, lights or anything in between.

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Relevance 74.21%

Hi,My original problem was my computer randomly shutting down without any error messages or anything like that, as well as not being able to turn it back on until after a while, seems like the longer I leave it turned off, the more time I get to leave it turned on before automatically turning off. Anyways so I decided to open up my computer and take out the heatsink and everything else out, and clean the dust off. After fully dusting off the computer I plugged everything back in and now the fans, and lights turn on, and the power supply fan slowly spins before finally spinning after a while. I get no display or any usb mouse light. I tried taking out the CMOS battery and then putting it back in, Also I get no beep when I take out the ram. I tried taking out the video card and plugging VGA unto motherboard. Also the hardrive, it spins so dont think its a hard drive issue. When I took out the cpu it broke the thermal paste off, so I was wondering if that has to do with anything?Also I am thinking if it might be the power supply and me needing more then 500 watts. My Computer Specs:Assus M3N78-VMOCZ StealthXStream 500 watts P/SOCZ 2x2gb DDR2 RamAMD Phenom x4 9600Evga gtx 460 768 mbLg DVD DriveWestern Digital 1tb Black EditionNZXT Guardian 921 casePlease Help!Thanks.

Answer:No Display-Fans and lights turn on

A quick read of your post indicates that you did NOT damage the power supply. You did something when you removed the heat sink. Check your work, but before you do anything, get some thermal paste. It does not cost much and is required when you take off the heat sink.

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Relevance 74.21%

My computer just recently crashed while I was playing a DVD. It had been running fine for about 1.5 years, except for the occasional BSoD (kernel inpage error) in the past couple of months after I had been playing Wolfenstein Enemy Territory for extended periods of time. This time, however, it wasn't a kernel inpage error, but something else. I didn't catch it, as it flashed pretty quickly. My computer proceeded to reboot, but then it froze. I turned the computer off, and when I tried turning it back on again, nothing happened. No lights, nothing. BUT the CPU fan and the case fans were still running, and the only way I could get these to stop was to unplug the power.

I'm about to go borrow a stick of ram from a friend to see if that's the problem. Does anyone have any other ideas as to what could be wrong? Thanks in advance.
 

Answer:Computer won't turn on but fans running

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Relevance 74.21%

I play Battlefield 2 and Cs 1.6 and everytime i play either game, the fans in my computer turn on really fast and for a split second the screen frezzes and the resumes the game. Its getting really annoying trying to play and have this going on every 30 seconds. I know is not my computer becaus my specs exceed the minimum of BF2.-Windows XP - intel PT4 3.0 GHZ- ATI Radeon 9550 - 1024MB  RAMSomeone please help

Answer:Fans turn on rapidly every 30 sec. during game.

What are your system temps? Open it up and blow a fan in there and see if this makes a difference. WHat kind of case ventilation? Has it always been this way? If not, what has changed?

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I have a Toshiba Satellite (about 2 years old) and for the life of me, I can't figure out what' s going on.

Here's what I do know:

I used a multimeter to test the voltage of the power port on the connector that plugs into the motherboard. I'm getting 19volts which is what it's supposed to be at.

I have replaced the bios battery - nothing

I have held down the power for 60 seconds with it unplugged - nothing

I've tried running on a/c power only - nothing

Possibly the most confusing thing - I was fiddling with the network adapter (the internal pci one - not the usb kind) because after tearing it apart and putting it back together so many times I was trying literally everything - I switched out the network card. (I realize what little sense this makes) but it turned on. For only about 15-20 seconds but it turned on. 3 times. Then died before it ever fully loaded windows.

I assume there is something on the motherboard around the network card area that I touched that made this happen. But I can't for the life of me figure out what. It has been dead as a doornail for months. And something happened when I touched and swapped out the network card.

*total confusion*

Answer:Laptop won't turn on, no lights, no fans.

Does a charging light illuminate when you plug in the power brick to show it's providing power to charge the battery?I
If you wiggle the connector from the power brick to the laptop, does the charging light flicker?

Have you attempted to see if it boots up without the wireless card?

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I have an HP Pavilion a1520y and I went for a two month vacation this summer. When I returned I found out that my computer was doing something it has never done before in my life. When it goes into a low power state (i.e Shut down, hibernation, standby), the power button still stays lit and the fans go crazy. The only way to stop this is to pull the plug. It happens randomly so one week its fine then one day it acts up. I checked my motherboard and the caps are OK. I think there is something wrong with the Power Supply. Please Help Me! This is getting very annoying and it could bring something bigger and worse.

PS: I did upgrade my BIOS and it didn't help the problem.
 

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I built a PC about 4 months ago, and I noticed that sometimes it takes up to 30 tries to get the PC to turn on. If I push the power buttom, some lights will come on, but unless the CD-ROM light flashes, the system will not display video or boot. Then I just try again and it works after a few attempts.

Any ideas what could be causing this?

Here are my systems specs:

Intel Celeron 733MHz
256MB PC100 RAM
30GB WD HDD
Voodoo4 AGP 32MB
Intel 10/100 NIC
ActionTek MB w/ Sound
 

Answer:PC Will not turn on half the time

try reseating your ram card
 

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Hello, the cooling fans of my IdeaPad laptop turn on and off very frequently (even if the laptop is almost idle - let's say when I'm just viewing a page in Chrome without performing any activity like clicking or typing). They usually run for about 30 secs or so and after that they turn off and no noise from anything is audible. But after another 30 secs they turn on again and that cycle repeats all the time. I did a search on the net and found a potential solution to the problem here. But after updating the power settings as suggested nothing changed (I restarted the machine). On the other hand, I didn't find any options about that in BIOS. Is there any way to control the cooling fans, because it's kind of bothering to hear them turn on and off all the time?

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My system about 3 years oldDell XPS Gen3 pci expressswindows xp propent 4 3.22 g ddr2 533 mem8800gt video card 2months oldsound blaster soundRecently upgrade from 1 gig memeory to new 2 gigs of memeory 2 weeks ago.Computer ran fine the day before but went to turn it on yesterday and it starts up fine for first second then all the fans kick on at high speed the power light turns yellow and that is as far as it goes fans at full speed and wont boot.I have tried putting the old memory back and and no help. blew out the inside which was pretty clean. Removed the video card and put it back in along with sound card.This has hapened before but turning it off and back always took care of it but had not happened in over a month.Widows is up todate with all files.

Answer:WheN I turn on my comp the fans kick on high and thats it

I would try to reset the cmos first. Turn off the computer, unplug the computer, open the case and find the small battery on the motherboard. Make sure you ground yourself by touching a piece of metal from the case before taking the battery out. Leave it out for about 20 minuets. Push the power button a couple times also (I have heard there can be some stored power left in the caps?) Put the battery back and start the computer.  I doubt this will do anything, but it is a quick thing to try.If I had to guess, I would say it is your power supply. I say that because I see you added a fairly power hungry graphics card plus more ram. You may be reaching the limits of your power supply.  How big and what kind of power supply is it? Should be listed on the side of it.

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I'm definitely not an expert but I have general knowlege from building a couple systems. My current system is the following (I apologize if some details are left out, I'm currently at work)

OS: Windows XP
Chip: Intel P4
MB: Asus P4P800 (865 PE)
RAM: I forget - 2 sticks of Kingston = 1gb
HD: 2 SATA
Video: Nvidia 5600 AGP (running 2 monitors)
PSU: Generic from Fry's 400w

I was listening to some streaming music and left the room for a couple minutes and came back my computer had shut down. When I got closer I could hear the system trying to boot, the fans would spin but it would shut down every 2-3 seconds. I switched the power off from the PSU.

I bought a replacement 500w PSU from Fry's figuring it went bad. I installed the new PSU but the system would not boot. THe fans would come on and a light on the MB was on but nothing. My monitors weren't receiving a signal either.

I then thought maybe it was the video card and went and bought a Nvidia 6800 AGP but still nothing.

I read online and tried a few other things:
- Removed the onboard battery on the MB and reseting the CMOS using jumpers
- Removed all PCI components including video card and tried booting and then installing only the video card and rebooting.
- Removed one stick of RAM
- Removed hard drives

At this point I think it might be the MB or just another bad power supply. Any other suggestions?

Thanks in advance.
 

Answer:Old Computer: Fans turn on but system won't boot

Remove the CPU heatsink/fan and check for thermal past. Clean of the old paste and apply new
 

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In which of the ACPI power states on a desktop computer are the CPU/PSU fans on?

I guess in S0 all fans are ON. In what of the other states are fans off?
..................................................................................................................
Wikipedia: Advanced Configuration and Power Interface:

? G0 (S0): Working. "Awaymode" is a subset of S0, where monitor is off but background tasks are running.
? G1, Sleeping subdivides into the four states S1 through S4:
o S1: All processor caches are flushed, and the CPU(s) stops executing instructions. Power to the CPU(s) and RAM is maintained; devices that do not indicate they must remain on may be powered down.
o S2: CPU powered off. Dirty cache is flushed to RAM.
o S3: Commonly referred to as Standby, Sleep, or Suspend to RAM (STR). RAM remains powered
o S4: Hibernation or Suspend to Disk. All content of main memory is saved to non-volatile memory such as a hard drive, and is powered down.
? G2 (S5), Soft Off: G2/S5 is almost the same as G3 Mechanical Off, except that the PSU still supplies power, at a minimum, to the power button to allow return to S0. A full reboot is required. No previous content is retained. Other components may remain powered so the computer can "wake" on input from the keyboard, clock, modem, LAN, or USB device.
? G3, Mechanical Off: The computer's power has been totally removed via a mechanical switch (as on the rear of a PSU). The power cord can b... Read more

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I just recieved my new Dell XPS. I have one thing that I would like to change and can't seem to find out how to do it. When I enter standby, the computer shuts down but the cooling fan(s) continue to run. When I bought my Dell 8100 three years ago it was the same way, but the issue was fixed when I upgraded to XP Pro. Now, with the XPS and XP pro the fan(s) continue to run while in standby. There must be a way to control this. Maybe through the bios? Any help would be great.
 

Answer:How to turn off power supply fans while in standby?

Look at APM in the BIOS.
 

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I got this computer off eBay a few months ago. The computer started up fine for some time and suddenly it stopped booting.I randomly could get it to boot into XP but within a few minutes of starting the unit would freeze up. The fans will start, run on high speed and it appears that the bios searches the DVD drive for a disk and the system just hangs, no beeps, no video, nothing.  I have tested the power supply and it passes. I tried a known good power supply for the heck of it but sill had no luck. I have pulled and replaced the memory and there is nothing else in the computer but the PCI Riser Card.   The cmos battery showed 2.45 volts so I tossed in a new one just for the heck of it and reset the cmos to no avail.  There is nothing obviously wrong with the mother board, at least no obviously blown caps.I am out of ideas.  Given that most of the stuff in the machine seems to be preparatory it looks like I have a pile of silicone, metal and plastic to recycle... am I missing something? Bob

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Please Help me with this,
One day I get home, turn on my computer, it comes on... checking email...alls fine, then my computer just turns off... click the on button...loading... screen comes up...bam....off again! Not even any error messages! I continued like this for about 10-15 minutes untill now I only get it up for about .7 seconds and nothing appears on the screen.

Now,
1. I have the power supply, fine.
2. I have checked all peripherals, fine.
3. I have checked the video card and RAM on different computers, fine.
4. I have continually cried, fin... never mind...
5. I checked the Hard drives, mointor, all other drives, FINE!

My system specs are as follows:
| AMD Athlon 64 3200+ |)
| Gigabyte GA K8NS |)
| Apollo Geforce FX5500 256MB DDR |)
| 3 x Corsair 256GB DDRAM |)
| Western Digital 250GB ATA IDE HDD |)

Thanks in forward for any help or ideas, but one thing that I could use is howto test to see if you motherboard is damage.

Thanks even more!
 

Answer:PLEASE HELP, computer won't turn on, fans come on and lights blink

Have you checked that your fans are spinning up? Is the heatsink sitting flush with the CPU? Have you made any changes to your hardware on the mobo?
 

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i just built this computer, It will not turn on at all...Only time it shows any life is when i turn off the power completely and try to turn it on which it will flicker just like half a second on the PSU..

I just ruled out the PSU because i just bought a new one to check if that was it and did the same thing...(i returned back)

Im still lost tho...

My computer is this
-ASUS M4A87TD EVO AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
-AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz Socket AM3 125W Six-Core Desktop Processor HDT90ZFBGRBOX
-SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
-GIGABYTE GV-R465OC-1GI Radeon HD 4650 1GB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready Video Card
-CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B
-Rosewill Stallion Series RD500-2SB 500W ATX12V v2.2 Power Supply

The front panel cords are in there right spot. I dont think its the PSU because of me checking it with a new one.

Please does anyone have any advice on where to go from here...All Parts are brand new other then my dvd-r drive.
 

Answer:PSU flickers for half sec and doesn't turn on

Is the motherboard shorting against the case/motherboard tray? Did you use motherboard standoffs and if so, none of them are improperly installed or misaligned in the wrong place? It does sound like you left them out.
 

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Hi all,
I've got an Asus ROG G752VL-DH71 here and the fans have suddenly switched to 100% - though the temp of everything seems quite fine (hottest is 51 degrees, gpu) and the CPU usage is at 8% average, disk usage no more than 20%.. I cannot find out why these fans are on 100%, so loud, and why I'm unable to change this!!

Someone please help

Answer:Asus ROG G752VL-DH71 - Loud fans won't turn off or down

What are your CPU temps? Use a CPU Temp monitoring program like Core Temp or Real Temp to monitor your CPU temps. Also, are you sure it is your CPU fan or the GPU fans? Please follow these suggestions to give us the info we may need to help you.

Please fill out your System Specs
   Information
Your System Specs will help us to help you, and doing it in this manner will make them available to all helpers in every post and keep us from hunting for them. We ask that you fill them out in as much detail as possible including Desktop or Laptop, Model number if it is an OEM computer and all components with the Manufacturer and Model number if possible. If you will go to your last post and click the 'System Specs' in the bottom left of the post, you will find a link to update your system specs. Please fill those out in as much detail as possible, making sure to click save at the bottom of the page. If you would like to know what we would like, you can click 'My System Specs' at the bottom left of this post to see mine. If you do not know what your components are, this will help you accomplish this task. System Specs - Fill in at Ten Forums

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I have an HP media center PC running x64 Vista, when I usually put the PC in sleep mode (I'm assuming s3?) the case fans, PS fans and CPU fan would all cut off, now they do not. I have been reading and scanning forums all day on the subject and find no fixes. The closest thing I can come to is a registry setting? There are no power management options in BIOS(the BIOS is the most recent release, I checked).

Any suggestions appreciated!
JC Carmichael

Answer:Motherboard fans won't turn off in sleep mode anymore.

Fans won't cut off as in woon't turn off or keep on going? Have you tried flashing the BIOS?

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Hi, I would firstly like to apologize for not being able to update my user CP or tell you what my CPU/Mobo is. I can't get my computer to turn on and can't access the info.

This happened while I was trying to reset everything on my computer (because there was a problem with my NIC). I unplugged everything and replugged them into their respective places, and now I can't seem to turn my computer on. Everything was working fine (except the NIC) prior to my resetting. Now the problem is when I turn on the power, there would be a small delay before it would turn on, and when it does turn on, the lights in front of the computer (for the on switch) flash, the flashing intervals are synchronized with the rate the CPU fan turns on and off. The case fan is running constantly however and it is blowing out cool air. I have done some searching on the forums, and I have heard that it was because I unplugged the 12-20 wire that connects the power button (in the front) to the CPU. I unplugged this wire and the fans still turn on and off, except the front LED's can't flash. If anyone can help me, that would be most appreciated.
 

Answer:Lights flash, fans turn on and off, comp remains off.

You gotta do some more diagnostics.
But before I'll start listing them, I have one question:
Before you've removed components from your computer did you un-plug it from AC outlet? Cause if you didn't you may've damaged motherboard or any other component for that matter. I know it sounds silly but I'm just making sure.
Anyway, do as follows:
Unplug the power. Open the case and re-sit you memory modules and if you have to re-sit your CPU chip. Re-sit all your add-on cards (sound, video etc.) Make sure you re-install the CPU heatsink properly. Make sure that all cards and modules are snug and properly sitted in the motherboard.
Note! Dont' ever operate your CPU without properly installed heatsink, ever!
Plug it back in and the try to boot. If it's still no go:
Unplug it. Pull all the cards out except for the video card. Disconnect all your drives: hard drives, cd/dvd-rom/rw drives, floppy drive(s) etc. Actually disconnect everything from you motherboard except for: CPU, 1 memory module and video card (and of course power supply - make sure the 12V+ cpu plug is in the motherboard!). Plug in and power on. See what happens. If it's still no go move the memory module to a different slot; power on; still no go - pull the video card out: plug-in power on; still no go:
- Your power supply, motherboard, memory module or CPU has gone bad - you gotta swap them out with differnt component to test if this fixes the problem; star... Read more

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Hi all,
I've got an Asus ROG G752VL-DH71 here and the fans have suddenly switched to 100% - though the temp of everything seems quite fine (hottest is 51 degrees, gpu) and the CPU usage is at 8% average, disk usage no more than 20%.. I cannot find out why these fans are on 100%, so loud, and why I'm unable to change this!!

Someone please help

Answer:Asus ROG G752VL-DH71 - Loud fans won't turn off or down

What are your CPU temps? Use a CPU Temp monitoring program like Core Temp or Real Temp to monitor your CPU temps. Also, are you sure it is your CPU fan or the GPU fans? Please follow these suggestions to give us the info we may need to help you.

Please fill out your System Specs
   Information
Your System Specs will help us to help you, and doing it in this manner will make them available to all helpers in every post and keep us from hunting for them. We ask that you fill them out in as much detail as possible including Desktop or Laptop, Model number if it is an OEM computer and all components with the Manufacturer and Model number if possible. If you will go to your last post and click the 'System Specs' in the bottom left of the post, you will find a link to update your system specs. Please fill those out in as much detail as possible, making sure to click save at the bottom of the page. If you would like to know what we would like, you can click 'My System Specs' at the bottom left of this post to see mine. If you do not know what your components are, this will help you accomplish this task. System Specs - Fill in at Ten Forums

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I've had my inspiron 15 7567 for little over half a year and have already had several major problems with it, all of which have been able to fix myself up until now.
When the laptop enters sleep mode(either by closing the laptop, or entering it manually) the fans kick on at full speeds, and remain on until i open the laptop again. I have also found that the fans will do the same thing even if my laptop is completely shut down, as long as it is plugged in.
Any help or suggestions would be appreciated, thanks.

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Replaced power unit with 350 Watt unit, fan & sink, new 775, and ram. MB fans turns on the sec. power is applied to MB.MB # FRU 42Y246493 looks like pic. on pg. 132 of Hardware Maintenance Manual. If MB is bad where can I get a replacement?Better who makes that MB? Also there are 2 pairs of pins on MB 1 above FP connector, 1 above A drive connector.  

Answer:ThinkCentre 9637-D5U MB fans turn on, not video, not beeps, not keyboard.

Haven't found the maker yet. Just this http://product.pelltechnology.com/IBM_ThinkCentre_M55e_9637_D5U_Motherboard_Replacement.asp





Linux Registered User # 475019Linux: Ubuntu 8.04,AntiX 8.2,Xandros 4

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What do I need to install to make them work? They are set to on in the power management settings

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The fans on my video card work fine in UEFI & Ubuntu but when I load windows they turn off upon the windows login screen loading

They also seem to stutter a little like they're trying to turn back on but never do. This is only an issue when running windows and wasn't a problem the other day, but I think there were a bunch of updates that installed since then.

What could cause this and how do I fix it?

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Hello,

I have upgraded to Windows 7 x64 from Windows XP. With Windows XP, shutdown/reboot/sleep were working perfectly fine but now with Windows 7 x64 the PC refuses to shutdown completely. The fans/LED/CPU remain on. Same thing if I chose to sleep the computer. I need to press the power button for 4 seconds to completely shutdown the PC. I've tried:

- A clean boot;
- Deactivating all non essential services;
- Looking into devices power management tabs and deactivated accordingly what was needed;
- A Safe Boot;
- Reverting certain drivers to older versions (network card, GPU);
- Resetting bios. The Bios is up-to-date;
- Doing a sfc /scannow.

None of the above changed a thing. The outcome is always the same. The only difference with a Safe Boot is that the shutdown process hangs at the "Shutting Down..." window and therefore I need to hard reset the computer as well. Windows 7 is fully up-to-date.

In order to eliminate possible hardware issues I booted the PC with a backup drive of my old installation of Windows XP. Shutdown works perfectly. So it does not seem to be hardware related.

I have made a Shutdown Trace that can be found here. Could any expert have a look at it and tell me if he notices anything out of the ordinary?

Thank you.

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I have had this desktop for quite some time now but i don't just want to give up on it without trying to see if i could make it work again because it has on tons of songs and pictures.
Anyway the fans started acting up and every time i turned it on it had a high revving sound. Soon after the fans stopped working and when i press the power button it failed to power up. I allowed months to pass i just connected it to the power again and the orange/amber light came on flashing for about 5 minutes then it disappeared for good. What could be the problem? Do I just throw it out or it could be fixed?
 

Answer:Dell Dimension 3000 fans stopped working PC won't turn on

I've seen this on a few Dells in the past. First thing to check is the power supply.
 

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When I Exit Speedfan,my Cpu And Hd Fans Just Go On At Highspeeds And Dont Go Off Until I Go Bak To Speed Fan And Turn It Down Manually.....how Do I Just Get Rid Of Speedfan And Make My Computer How It Used To Be?
 

Answer:Solved: Everytime I Turn Off Speed Fan,my Computer Runs The Fans At 100%,how Do I Fix This?

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Hello I have quite a frustrating problem, last week on my last PC I was having problems with it slowing down in games even though it was more than fast enough to handle them, after trying to trouble shoot it, my screen randomly went black after I restarted it the front LEDs wouldn't turn on, my keyboard and mouse would not light up and the screen was black, though all fans would turn on, so I started to trouble shoot, I bought a new PSU, I tested my GPU in my roommates computer. And I replaced the ram with my roommates ram, I posted on other forums and they said it was likely my mobo or CPU, so I went ahead and used it as an excuse to upgrade, I bought a new core i5 4690k CPU and an MSI z87 mobo, put everything together and still the exact same problem. The only components I haven't replaced are the fans and my computer case / power button and audio/USB jacks. I don't know what to do now, could it be that there is something wrong with my power button coming from the case that is causing all this? (Note the front LEDs flash for a split second when I turn the PC on or off)
 

Answer:Solved: brand new PC won't turn on, fans start but no front LEDs or signal to monitor

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My problem is actually similar to the following:
http://forums.techguy.org/hardware/730934-dimension-4700-light-flickering.html
This thread however had no responses.

I know a little more about my problem and hope it can be solved here.. Sorry for making this post so long, but this problem is a real bugger and I'm giving all the info I can.

The problem: When the computer doesn't start
When I plug in the computer, pressing the power button does nothing. This problem is aggravated in winters (weird but true) and when the D-Link ethernet card is plugged in (whichever slot).

When it does start:
In summers, I leave it powered for sometimes, say 20 min.
Gradually the power light on cabinet starts blinking rapidly (on pressing the power button).. a little later the HDD lights also start blinking. The CPU fan turns in jerks and in sync with these lights. A little later, the computer boots normally and works fine after that.
Also, operating it increases the temperature, and subsequently the computer can be made to start without problems.. till it cools down or I disconnect mains.

How I have to start it when it doesn't:
In winters, the above procedure doesn't work. Then I can try one of two things (I usually avoid turning the comp at all, use my laptop instead, since I don't like either method)
I can point a hairdryer from a safe distance at the motherboard, and keep the power button pressed. It starts in a little while.
OR, this is possibly a worse method..... Read more

Answer:Computer startup problem: power light flickers, fans turn in jerks

Have you replaced the BIOS battery? after 5 years its is most likely dead or nearly dead by now. Get your multimeter on it and check it's voltage (my money is on this)
Have you tested the CPU fan to see if it spins up OK, test on another PC if you have one?
Have you tried booting up to just the POST with NO drives connected with power?
Tried another PSU? Does this PSU work OK in another PC?
 

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Hi guys, this is my very first forum post ever in my life and I hope I get super help.So there I was working on my computer one day. I was downloading a youtube video with a program that has scheduled shutdown computer option upon download completion. I turned that on and turned off my monitor. After about 1-2 mins I noticed the power and HDD indicator lights in front of the CPU casing is turned off so I thought for some reason my pc probably turned off. I tried turning it on by pressing the power button and at the same time turned my monitor on. It turned on with a light-brown colored background so I quickly hit restart but then it won't turn on. I plugged by USB in hoping it would try to boot from the USB (my bios settings primary boot is set to removable devices). Then I pressed the power button again but THIS TIME I noticed that a very bad wire-burning type smell is coming out so I instantly turned EVERYTHING off. Later I opened my CPU casing and tried smelling the devices and found that probably the smell is coming from my second (and newer) hard disk that is about 10 months old. So, finding no hope and ideas I threw myself to computerhope.com's forum from my school laptop...please anyone help me out ASAP!Note that when I still try to turn my the pc on the power supply fan, the ethernet lights and even the DVD-rom drive works; so I am totally confused!My pc is  Intel Core2duo, 2GB ram/memory, 256 internal video memory, primary hard-disk=160gb and secondary... Read more

Answer:CPU/Power Supply fans work but indicator light in front doesn't turn on.

Minimal boot is where I'd start. If motherboard has integrated video use that, disconnect all drives, and just have the motherboard set up with 1 ram stick, and try to boot. If you get it to boot then shut it down and add 1 component and boot up again if no boot then you found the cause if it boots then move to next component to add and repeat. If no boot on minimal boot, then swap single Ram stick with another if you had more than 1 stick. If still no minimal boot swap power supply. If still no minimal boot its something local to motherboard. Unistall CPU and check for damage and reinstall it, apply thermal compound and heatsink and try another boot. If still no boot, I'd buy or use a different motherboard unless you have a POST card to work with and want to troubleshoot deeper.Cooked component smell is not a good thing, if you can localize the smell and find burned traces or parts that would be a help in determining if this can be saved or if you need to start a new build. I have only seen one hard drive smoke before and that was my friend way back when SATA drives first came out and it had a P connection as well as SATA power. He hooked up both and cooked it. On a small warning in the box it warns not to plug power to both. I'd doubt if your drive is one of these drives given that you mentioned that it is 10 months old.

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I have a custom pc wich has developed a fault. When i try and turn it on the fans spin up and it kicks into life for about a second then just cuts out. After about 3 seconds it then tries again. At first i thorough it would be the power supply but I tried replacing that and nothing. When you start it with no ram the computer starts up successfully and beeps implying the memory error. Also, when you boot without the 4 pin connecter going to the CPU plugged in it also starts up ok ( but without cpu ). For this reason i would think its the CPU that has gone. I have tried re beding it and the heat sink. Any ideas??

Spec:
Intel i7 820 cpu
8 gb DDR3 ram (PNY in 2gb sticks)
Nvidia GT120 graphics card
Pegatron mother board
Coolmasters HAF 932 case
 

Answer:Fans spin up for 1 second then cut out

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Hello there, I have had this machine (Thinkpad x220T) about a year now and never really so much as heard the fans (slight sound, but not much more than from an external drive). Recently even simple Games under Steam started lagging and I wondered if it has to do with overheating. So I downloaded SpeedFan and noticed that my CPU-Cores are over 90°C when quitting the game, while lagging. The program, however, doesn't seem to find any fans within my system and there still is no noise and no airstream coming from the grids on the sides and back. It is as if they never actually existed. Any thoughts anyone? Help would be much appreciated! UPDATE: I just noticed a slight difference in noise during cooldown of the cores, but very minimal. There still is no airstream and I don't see why an 8-Bit era style game would be able to push my system to it's limits.   

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Hi...,

After intensive search in this forum I?m posting my problem?
I'd assembled a System in Oct 04 with OS Win2K. It worked well for an year. I decided to upgrade the OS to WinXP. While upgrading I noticed during one of the reboots that the welcome page before POST began, had shown as Celeron D, whereas the system I had built was Pentium IV 2.4Ghz. .. Anyway, I completed upgrading the System to WinXP. During subsequent restarts, I observed that at least 1 out of 5 times welcome page showed as Celeron D. Out of curiosity, I opened the heat sink to reconfirm the make of the CPU. It was marked as Pentium IV 2.4GHz. Reassembled everything back.

Configuration of my system is as below:
----------------------------------------------
CPU-Intel Pentium IV 2.4 GHz
MB-Intel D865GBF
RAM-256MB 266MHz (Now 2 x 256MB 400MHz)
Seagate 80GB
PSU 300 Watts
ATX Tower Cabinet with 1 In Fan, 1 Out Fan
LG CD writer

Now, I started facing the series of actual problems: :unch:
------------------------------------------------------------
1. The System works well, as long as I run ordinary programs.
2. Idle conditions, the CPU zone temp is 46 to 48C max. Any low end games will raise the CPU temp to 54 to 56C max. And high end games will raise temp above that & system will freeze!
3. Well the system can be used for several hours in idle condition or with ordinary software, but the system DOES NOT START even after normal shut down..
4. After norma... Read more

Answer:All fans spin but NO POST

The first thing I would do in this case is reflash the BIOS with the latest update from the motherboard manufacturer's site.

Because the Celeron D is a dual-core processor and the installed processor is a standard Pentium 4.

But you have only done a BIOS recovery, which is flashing the same BIOS file.

Did you get a new BIOS file from the maker's site, even if it isn't an update?

How does CPU-Z from http://www.cpuid.com/ ID the processor?

Have you checked the processor and the socket with a magnifying glass to make sure that there is nothing in the socket or on the contacts on the CPU that is making that happen?
 

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ok...my pc will not boot at all.when i turn it on i hear nothing except for fans...no beeps...the only way i hear the harddrive is to unplug it from the motherboard. anyway theres no bios or nothing...this all happeneed when i removed the heat sink to see what procsesser i have(big mistake) but at least i no know.... i put the processer and heatsink back on properly at least to my knowledge,,,

specs

western digital harddrive 80gb
768mb of ram pc2700
dell 2400 motherboard
intel celeron 2.4ghz
geforce 128mb videocard pci
 

Answer:my pc will not boot...fans just spin.....

Hi there, and welcome to Techspot.

When you placed the CPU back in the motherboard, did it just slide in softly, or ..... did some pins bend?

I'd take the CPU out again and have a look at the CPU pins to see if any are bent.

When you put the heatsink back on the CPU, did you clean off the old thermal paste and apply some new goo? You need to. Thermal pads/paste are usually no good once you break that seal. You need to buy some thermal paste and after cleaning the old stuff off, apply the new.

Also, what do you mean when you say:




the only way i hear the harddrive is to unplug it from the motherboardClick to expand...


 

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Hi...,After intensive search in this forum I[ch8217]m posting my problem[ch8230]  :-? I'd assembled a System in Oct 04 with OS Win2K. It worked well for an year. I decided to upgrade the OS to WinXP. While upgrading I noticed during one of the reboots that the welcome page before POST began, had shown as Celeron D, whereas the system I had built was Pentium IV 2.4Ghz. .. Anyway, I completed upgrading the System to WinXP. During subsequent restarts, I observed that at least 1 out of 5 times welcome page showed as Celeron D. Out of curiosity, I opened the heat sink to reconfirm the make of the CPU. It was marked as Pentium IV 2.4GHz. Reassembled everything back. Configuration of my system is as below: ---------------------------------------------- CPU-Intel Pentium IV 2.4 GHz MB-Intel D865GBF RAM-256MB 266MHz (Now 2 x 256MB 400MHz) Seagate 80GB PSU 300 Watts ATX Tower Cabinet with 1 In Fan, 1 Out Fan LG CD writer Now, I started facing the series of actual problems:   [smiley=cry.gif]------------------------------------------------------------ 1. The System works well, as long as I run ordinary programs. 2. Idle conditions, the CPU zone temp is 46 to 48C max. Any low end games will raise the CPU temp to 54 to 56C max. And high end games will raise temp above that & system will freeze! 3. Well the system can be used for several hours in idle condition or with ordinary software, but the system DOES NOT START even after normal shut down.. 4. After normal shut down and... Read more

Answer:All fans spin but NO POST

I want to hear about the make and model of the power supply. If the currents not right, all bets are off. 300w is not much, either.

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Hiya,
Here's what has been happening:
PC won't POST. I can't get to Windows or even the BIOS.
This has been an ongoing, intermittent (on/off) problem which seems to have now become permanent.
There are no beeps when powering on.
I replaced the PSU with a new CoolerMaster one in an effort to resolve the issue. No luck.
I've unplugged almost everything from the motherboard and tried powering on, which includes:
HDD
RAM (2 sticks: 4GB, 2GB)
CD/DVD ROM
Peripherals (including, embarrassingly, the Power button...)
Mobo fan (which is the one that wavers every few minutes)
The only items I did not unplug/disable are the CPU fan and any onboard ones, e.g. integrated graphics.

Some history now:
The PC has been having this problem for some time now, i.e. months. Eventually, it would POST and then go to Windows until Friday. Now, it just sits trying to POST. The motherboard fan will waver from slow to fast every few minutes. (I timed it and the wavering has no exact pattern.)

Side observation:
When removing the 4 gigs of RAM, leaving only the 2 gigs, PC freaked out and turned on and off several times before finally POSTing and going to Windows normally.

Today, I removed the CMOS battery for quite some time, maybe an hour or more. The PC was unplugged when removing it and after so I hit the power button. After popping the battery back in and turning back on, I still get nothing.

Can I turn the PC on with the CMOS battery removed? Do you think it would help ... Read more

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Okay so I have a Gigabyte S-series mobo w/ a dual core intel processor, BFG 650 watt power supply, Nvida 256 mb Gforce fx 5500 graphics card.

(This may go in hardware forum actually, but it confused me. Mods are free to move it there if they wish..)

At first, nothing would spin, but I'm genuis like that. A flip of the switch on the back to set it at 115 fixed that and I thought I was good to go again. But now, I get no beeps only fans. It is supposed to beep right? I've made sure the power is mounted to the board.
 

Answer:Fans spin, but no beeps

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Fans spin then it shuts off
Have tried sons power lead no good
have taken all cards out and memory sticks one at a time still nothing
checked for loose connectors and cleaned the spiders out

i am about to get a hammer
 

Answer:Solved: fans spin but then nothing

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Hi,
My computer has recently encountered a problem, whereby when i on the power at my CPU, lights will be lighted up and fans start spinning. But that lasted only about 1 second. After that, everything stops. There are a few times whereby all of them will start working once again, after stopping, but usually they stopped again, with very few times successfully boot up.

I had brought it to the service center and what that guy did is remove my ram and place it back. To my surprise, my CPU boot up. However, a few days later the same problem occur again. And I did what that guy did, but this time round I did clean my RAM metal piece (I don't know what do you call the thing that attach the RAM to the motherboard). It failed a few times, but boot up eventually after several tries (took out the ram, put it back).

I had totally no idea what is going on. This does not solve the problem, as it is going to come back and haunt me once again.

I have no idea what is causing it thus I could not bring it to the service center once again, as he will tell me this if he is able to boot up my computer: "so what do you expect me to do?" It really hurts.

Desperate for help, hope someone know what is exactly going on. Thanks.
 

Answer:CPU boot up, all fans spin and stop

If there's a faulty connection, there's a faulty connection... There isn't a whole lot you can do... But try this:

Get a Computer Duster can (A "Can of Air") for $2, remove the RAM, and carefully put the tip of the spray extension (They usually come with a little straw thingy, stick it in the nozzle) near the RAM Slot and blow out any dust or loose dirt/debris/whatever.

Be careful and use short bursts. Too much air friction can actually cause a buildup of static electricity, especially on plastic components (I have fried many a motherboard with this... so really, be careful)
 

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Hi ive built my pc ages ago, but recently ive moved it into another room, and now it dosent work??!! All of the fans spin up, ,the mobo gets power because all of the light on it light up. Whats weird is that the GPU fan ramps up the goes steady, ramps up the goes steady over and over. Oh ye there is also no beep at all.like I said it worked yesterday perfectly but now..........not so much.
Thanks for all of your help
Nik11105
 

Answer:All fans spin up, everything working, no POST

Sounds as if something has moved in it's socket, as you moved it from room to room. Most likely the graphic card. I would power off, and lift out the graphic card and refit it. Check that, if no different, remove the RAM and refit it.
 

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I recently put my desktop into a new case so it could run cooler. When I turned it on all the fans spin up properly at first but then start to spin extremely fast, mush faster than normal. There is also no picture going to the display and the HDD access light is not blinking even tho i know the light is working and connected properly. I know it is not the graphics card or the HDD as I have tried using different ones all to the same result. I have also tried removing all the ram. It just does the same thing as before, spinning the fans but not doing anything and there are no error beeps to tell me there is no ram.

Has anyone had a smilar problem or thing they can help?
 

Answer:Fans spin but no picture and not accessing HDD

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After moving my pc about to get at the wall behind it something seemed to get knocked loose inside it. When I turned it on I could hear the fans spinning and the power light was on but now signal was being sent to the monitor. I thought the graphics card had become loose so I pushed on it, even tho it appears secure and this helped it. Every so often it stops working so I do this again but I don't think the problem is the graphics card because if I leave it when there's no signal it never gets to the point where the windows start up music starts. The video signal also never goes off while the pc is on but sometimes when I have to restart when it comes back on the problem has happened. I think it's something to do with whatever hardware starts the PC up and pressing on the graphics card is also pushing whatever it is back into place but I have very little knowledge about pc hardware beyond changing graphics cards. Does anybody know what it is that might have come loose please?
 

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My build does just not seem to work I rma'd the motherboard and still no boot. Now I lost the speaker so I can't hear the boot codes but all fans spin up. What components can cause the computer not to boot up. I have 16gb of Patriot 1866 mhz Im wondering if thats the problem because the motherboard doesn't show that it supports it.

Answer:All Fans spin Memok Light All Red

It would default to 1600 or 1333 naturally. Take all but one stick out, unplug all extra devices from your board, install the stock heatsink, take the board and PSU out of the case and put it on the motherboard box, put your card in the top PCI-E slot, then try turning it on.

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Hey all.

Been having this problem for a long while now. Just started up suddenly and can't remember if it occurred after installing a software or if it's something hardware related. Any help is appreciated.

Problem:
After I shutdown the computer, maybe 2-3 minutes later, all the fans (PSU, CPU, Rear + Side case) start spinning; the hdd led flickers; and if my speaker system is on I can hear a flickering sound on there too (kinda hard to explain the sound). This continues for about 8-15 seconds and then it all stops, then after another minute or 2 it starts up again and stops. This continues unless I turn off the PSU power switch.

Also, the rear case fan (think 80x80, it's the smallest size that'll fit since there's 2 mounting hole levels above that one) went out yesterday after I air cleaned the system. I went and got an Arctic Cooling 12 PWM fan to replace it, but the connectors seem to be totally different (Arctic seems to use 4 pins while I can only see 3 pins on the Mobo) so that one doesn't work. But a while later I retried the rear fan and it seems to work for now. Dunno if something was lose of it it is truly dying.

I don't know if it's my Mobo (ASUS K8N) or something else. Only things I've upgraded since I purchased this system about 4-5 years back, was the ram. Upped it from 1 GB (2x512) Kingston Value Select to 2 GB (2x1GB) OCZ Platinum.

Again, any help is appreciated. Would go for a new system ... Read more

Answer:System Fans Spin After Shutdown

It sound like either a PowerSupply issue
Or your HardDrive or CD Drive is causing it
You could try disconnecting the CD Drive ATA data cable (obviously computer off first). It's difficult to tell though, because it may even be software!
 

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Just built it for my brother:
Atlon64 3000+
Asus K8V SE Delux (soc 754)
512 DDR PC3200 (generic {cpusolutions.com})
Asus 128MB V9520 8X AGP / FX5200

It only cost about 800 bucks.
Powered her on, and the fans just spin away but there is no beep, no post. H_ll the monitor doesn't even static on to give me any errors.
I removed it from the case (thinking the mobo was grounded). Same thing
Unplugged everything, except power button & HDD. Same thing.
Unplugged HDD (everything unplugged). Same thing.
Reseated everything, including power.
Took everything appart (everything, even my nicely tucked power / IDE cables). Same thing.
I checked the board for any traces I may have damaged and they are all OK.

Oh yeah, when I first booted, the CD ROM, floppy, and HDD activity light were on (and they would be still if they were connected).
 

Answer:No post, No beeps, Fans spin

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i was gaming one day and all of a sudden my pc froze and got a black screen so i rebooted my pc and As soon as i power on my PC psu and gpu fans do not spin at all but the other fans in the case is working. monitors all function properly they just recieve no signal from my gpu. hope its not my gpu that died. what can i do to fix this
 

Answer:PC powers on, No Display, psu and gpu fans doesn't spin.

1st thing to do is
post your computer spec's incl' power supply make/model
 

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Hi all.Quick bit of brain picking needed. I have a PC running an Intel Dual Core E6600, 2GB RAM, 640MB GeForce8800GTS and 2 SATA drives + 1 CD/DVD drive. All has been working fine for almost a year and a half up until today. I switched off yesterday and when I came to boot today, as in the thread title, the PC will fire up and spin the CPU fan, case fans, graphics fan and PSU fan for about a second (sometimes up to 3 seconds). I am having no POST beeps, so I am making a leaping assumption here that nothing major may have gone (I've had both a MoBo and RAM fail on other PCs in the past and the PC has sounded like a time bomb about to go off) but I stand to be corrected.I have tried the following:1) Removed/disconnected/reseated all HDD cables, Graphics Card, RAM, PSU connectors2) Tried to start the PC with nothing connected then add items one at a timeFollowing the abovve procedure, if I remove ALL connections other than the PSU to MoBo and RAM it will boot (with associated POST beeps for missing graphics etc). As soon as I connect anything else, even 1x SATA drive it falls over again and goes back to its restart loop as described at the beginningI'm sure there's a slight clicking noise coming from inside the PSU that I don't remember hearing before, but it could be selective hearing.Is it likely to be a PSU problem or something more serious? I'm guessing that the fact it boots into POST (although I can't see it) with no components connected means it's unlikely to be MoBo/CPU/... Read more

Answer:PC starts, fans spin, then goes into restart loop

I think you have done the right tests and made the right conclusion.One more variation if you haven't already done so, try the DVD drive only - and see if it will boot from a bootable disk. This would rule out a dud HD.It has to be the PSU.

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My computer died on me about a month ago. The screen suddenly froze one day while idling, I tried to restart and I got no post, no display, no beep code, only the fans spin and power button light goes on.

It's an old used gaming rig, I did not build it, I got it for free 6 years ago (ancient!!) from a tech guy I used to know. I've had problems with it before and had to replace a few parts over the years, the most recent being a new Power Supply from newegg.

Anyways, I guess it's finally time for an upgrade. Money is tight for me right now and I gather it's more cost efficient to just build a new system from current low-end parts rather than buying old parts for an old system. So I plan to buy new MoBo/CPU/RAM and recycle as much as I can from the old computer (Case/Power Supply/Video Card/HDD etc). Which is why I want to know what could have caused this kind of failure in case it's one of the parts I plan on recycling. I suspect it's the CPU that died but I'm a bit of noob when it comes to hardware and I'm not 100% sure. Could it be the Video Card or Power supply that caused this?
 

Answer:no post, no beeps, no display, only fans spin

CPUs are actually pretty hard to hurt unless you overclock/overvolt them or physically damage them while installing.

First of all, post ALL of your parts; no one knows what you are working on except you. In addition, post the exact pw supply you installed. Just because it is new does not mean it is working or that it is a quality unit. Newegg sells high end pw supplies and they also sell junk pw supplies.

If you are intending to replace the mb, cpu, and ram, I would also add a new case and hard drive. Both cases and hard drives have come a LONG way in the last 6yrs.
 

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So I had a problem with my T500's backlight initially and long story short, disassembling the computer has now caused the problem in the title. Whenever I plug in the battery/charger and push the power button, the fan will spin and the hdd will whirr a bit, but then after about 3 seconds, the fan will stop and the hdd will click off and cease whirring. The computer will no longer respond to the power button regardless of how many times nor how long the power button is held. I'm looking directly at the wires that carry power. Everything seems to be plugged in. I did the lenovo power trick (IE the 10 one second presses followed by the 30 second long press) and the computer does the 1-3-3-1 beep when I take out the RAM. The monitor is not plugged into it in any way, shape, or form. I do not know if this affects it. However, I have tried attaching the monitor and it still does this. Is there a piece that may have been knocked loose or something? I'm willing to try anything right now because at this point it's a literal brick now.

Answer:Lenovo Thinkpad T500 will turn on for roughly 3 seconds, then turn off and stay off.

Hi npesina, welcome to the forums,
 
there could be different reasons for the system behaving the way you describe, my suggestions;
 
remove all hard, SSD and optical drives to see if you experience the same,
remove all RAM, without replacing the drives, and test to see if you receive a system beep code,
remove all components which had previously been removed to test again.
 
The ultimate test would be to remove everything attached to the mainboard including the CMOS (BIOS) battery excluding the power socket, CPU and the fan. When you attach the power cable the system should come to life, the fan should run and beep codes sound.  After that its really just a case of putting the system back together one component at a time testing inbetween each component replacement, leave the main battery and CMOS battery until last to save having to always connect / disconnect the keyboard in order to turn the system on.
 
If at any point you experience the same issue as now it may well be that the component you replaced at that point or it's attachment socket on the mainboard  is the culprit.

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I purchased a IdeaPad Z580 laptop, with Windows 8.  The current BIOS mode is UEFI, with Secure Boot State = On.  I am trying to setup a dual boot with Linux Ubuntu or Mint?  Is this possible?  Thank you.

Answer:Ideapad Z580 - turn off Secure Boot State, or change to legacy bios and turn off UEFI?

Yes, I have the same question. Can someone help?Many Thanks in advance.

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Hi... lenovo gave me a replace computer... y70-70  According to them, the laptop is a new one and not a rebuilt one... Since the first day I picked it up and used it at home... When I turn it on, starts a pitched noise and it ends when I turn the laptop off. That sound is so annoying to work I canīt work more than one hour due to the annoying noise/sound...   That sound does not come from the speakers... What can I do? what is the problem? I need a quick response because I am travelling to another country in few days and I wonīt come back until 6 months before. Regards

Answer:lenovo y70-70 touch pitched sound when I turn on and ends when I turn off

Diian wrote:Hi... lenovo gave me a replace computer... y70-70  According to them, the laptop is a new one and not a rebuilt one... Since the first day I picked it up and used it at home... When I turn it on, starts a pitched noise and it ends when I turn the laptop off. That sound is so annoying to work I canīt work more than one hour due to the annoying noise/sound...   That sound does not come from the speakers... What can I do? what is the problem? I need a quick response because I am travelling to another country in few days and I wonīt come back until 6 months before. RegardsIf the unit is still under warrantee you can return it or request for repair. This is a peer to peer forum. Only Lenovo staff can decide for return, repair, etc. So better make a call to them.

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Hi

I have configured ad-hoc network for internet sharing from my PC. Normally I start it by
netsh wlan start hostednetwork
As I noticed the hotspot is automatically turned off when I turn off WiFi adapter. So I have two questions:

How do I turn on WiFi by command line, so that I can control it from various commandline scripts?
How do I configure the script for WiFi for autostarting hotspot whenever WiFi is turned on?

netsh wlan ...

Answer:How to turn on WiFi adapter from command line / How to turn on hotspot

  
Quote: Originally Posted by Anakunda


Hi

I have configured ad-hoc network for internet sharing from my PC. Normally I start it by
netsh wlan start hostednetwork
As I noticed the hotspot is automatically turned off when I turn off WiFi adapter. So I have two questions:

How do I turn on WiFi by command line, so that I can control it from various commandline scripts?
How do I configure the script for WiFi for autostarting hotspot whenever WiFi is turned on?

netsh wlan ...


Ad-Hoc requires that you restart the session each time.

Connectify pro has an auto start option that does this but it's a paid version, connectify lite is free but I'm not sure if has auto start.

Download - Connectify

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I was on my Y560 Model 0646 checking my email and the computer shut off on me.  I went to turn it back on and it does not turn on.  The caps lock and number lock light up.  Blue tooth, Battery, and Video status all light up above keyboard in status area.  None of the fans are going, and it does not sound like anything is running.  I tried removing the power and battery and pressing power button a few times.  Also tried to remove power and battery and holding down power and nothing.  It's almost like it freezes.  I can push the mute button and it lights up, but then cannot turn it off.  Please help.  Laptop just went out of warranty last month.

Answer:Y560 will not turn on. Caps Lock and Number lock light up but not fans or boot

I'm guessing it is because of the motherboard. Since it is out of warranty can a Y560 motherboard be purchased anywhere? Any ideas? Please help.

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PC WONT POWER ON' FANS RUN' NO DISPLAY' PWR BUTTON WONT TURN PC OFF 

Answer:PC WONT POWER ON' FANS RUN ' NO DISPLAY ON MONITER 'POWER BUTTON WON'T TURN PC

If you want assistance you need to provide a lot more information.1) Tell us about your system2) What is new or different since the last time everything worked properly (ie, new hw, new sw, virus, error, etc)?3) Tell us EXACTLY what is going on IN DETAIL

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PowerEdge T20 won't power up, power button & fans repeatedly turn on/off forever
1 year old. Press the power button, power button lights up amber, then white, CPU fan spins up briefly, then a beep and the power button turns off and the fan shuts down. Three seconds later the cycle repeats forever until I depress the power button for 5 seconds.
Is this a bad power supply? A bad motherboard?

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Hi all,

Before I realized how simple it was to build, i bought a premade desktop from HP, HP Pavilion Elite e9180f Desktop PC Product Specifications HP Pavilion Elite e9180f Desktop PC - HP Customer Care (United States - English)

Since then i have moved it to a new case and added a new hdd, at which point it was working fine.

My issue came when i sought to upgrade to a new graphics card, so before doing so i bought a new PSU. Initially i bought a Corsair HX850, and after trying everything i could think of, the same problem would happen: Case + CPU fans spin, LEDs light up, but the machine doesn't POST and no signal is output to the monitor. When i went back to the old PSU, everything worked just fine. After a while of muddling around with this i decided the PSU must be defective so i returned it and bought a Corsair TX650 (At this point i realized i probably wouldn't be doing SLI in the near future, hence the downgrade).

However, to my surprise, the same exact thing happens, and reverting to the original PSU returns working order to everything, so at this point I am certain it isn't any sort of PSU defect, but rather an issue with my machine, although i cannot imagine what that might be.

If anyone has any ideas, i'd appreciate the help.

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I went to take a look at a Dell Dimension 4700C (pictured below). The power switch on the front doubles as a power light, which was blinking a steady on-off-on-off. When you pressed the button, you could hear the CPU heatsink spin up, slow down gradually, until eventually it wasn't spinning at all. While the fan is spinning down, the light adds an additional blinking in (almost looks like it hard drive activity).

The entire time nothing appears on the monitor. You can hear the hard drive spin up when you hit the power button but it's brief and spins back down pretty quickly. From the moment you press the power button till the time it's finally powered down, about 15 or 20 seconds goes by.

Part of me is leaning towards this being a power supply issue. It's not your standard power supply, but a long slim one (which I really can't see how to remove properly). The inside of the computer had a moderate amount of dust built up and after thoroughly blowing it, the same problem persisted.

For what it's worth, I took a video with my cell phone of what happens after you press the power button (3GP format inside a zip file).
 

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Hey guys, I'm new a the HP forums so dont be to hard on me. I'm having problems with my Desktop PC Envy 700-203ed.  About a week ago I came home and I tried to turn my pc on, somehow it wasnt able to boot. (no bios nothing whatsoever) The fans did spin and the power led turned on but only for like a second and then it shut off and it tried to boot again. Again with the same results, fans spin for a second, power led turns on and boom shutdown and boot again, also no error beeps or anything like that.. I tried a different power outlet because their might be some problems with some of them (which is a different problem on its own). Somehow after I moved to the different source it was able to boot this time.. So I figured maybe it is a issue with this specific outlet or whatever. A couple days later when I was playing a game with a friend, and suddenly my pc switched off, it automatically tried to reboot after the sudden shutdown, but the same issue occured.. fans spin for a second and the power light came on and.. boom.. shuts off and tries again and again and again... So now my system was unable to boot. I've read on another post on this forum that i should try to boot without hdd and ram and other subhardware. This time I got a 5 beeps when it tried to boot.. I believe this means the bios was recoverd (rolled back the bios driver or something and please do correct me when im wrong about this) Next I reattached all the hardware... Read more

Answer:Desktop shutsdown suddenly, tries to reboot, fans spin, for ...

Greetings, Could not find product specs on your PC at the HP Support site. However, I did find some specs elsewhere. Did your PC ship with Win 8.1 64 bit OS? It appears to have been introduced by HP sometime in 2013 or early 2014. How much time elapsed between upgrading to Win 10 versus the onset of your problem? The intermittent problem you are experiencing could have any number of causes. Is the PC continuing to boot successfully or booting when it wants to since reattaching the hardware you disconnected? I am unable to determine this from your problem description. Exactly what hardware did you disconnect? You have to systematically troubleshoot each component and eliminate it as the cause. The first item to tackle is to run a check disk. Then run UEFI boot time hardware diagnostics. Then reinstall or update the graphics drivers. I can provide a general flow to use to troubleshoot the other components. Let me know if you are interested. Cheers!    

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MSI 770-C45 AM3 AMD 770 ATX AMD Motherboard
OCZ ModXStream Pro 500W Modular High Performance Power Supply
XFX HD-577A-ZNFC Radeon HD 5770 (Juniper XT) 1GB 128-bit GDDR5 PCI Express 2.1 x16 - old video card
ASUS EAH6770/DI/1GD5 Radeon HD 6770 1GB 128-bit GDDR5 PCI Express 2.1 x16 - new video card

Replaced failing Radeon 5770 with Radeon 6770 and now it won't work.

Motherboard LEDs turn on, CPU and case fans turn on. Graphics card fan turns on and then keeps cycling faster-slower every five seconds or so. No signal through VGA or DVI.
The problem persists even when I put the old card back in. What could have gone wrong?
 

Answer:Tried switching HD 5770 to HD 6770, fans just spin and no display

Any ideas, anyone?

Tried:

Reseating RAM
Resetting CMOD
Reseating both cards
Different cable from PSU to card
Dusting all components thoroughly

 

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So I've been abroad and my computer hasn't been touched for 6 months and it was brand new before I left. When I started it today it worked for 15 minutes before freezing. Then it wouldn't boot past the BIOS screen. Now the monitor doesn't even respond but the fans spin really fast and constantly until I manually turn it off. Needless to say, I'm gutted. HELP ME PLEASE! I already tried reseating everything and removing the mobo battery.

SPECS:
CPU: intel i7 920
MOBO: ASUS p6t
PSU: 650W seasonic S12
RAM: 3x2GB kingston
HDD: SATA-300 1TB 32MB samsung
CASE: CM690
GPU: MSI GTX 275

Thanks
 

Answer:Solved: Computer won't start, fans spin loud

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So I was watching a video from my 'Nix box last week while running some pretty heavy CPU intensive apps and the computer froze on me twice, My CPU never freezes so I thought that it was odd but the PSU and GPU were running a little hot so I thought I would tone down the usage as I had just installed some new cooling fans a day before and a new CPU about a month earlier. Then the computer shut down and wouldn't start back up. I replaced the PSU originally thinking that since it had been running hot maybe it just died. Installed and no power no fans nothing. Replaced the mobo with the same results, I'm at a loss right now as to what the problem could be. I even switched out the push button in case that burned out somehow and nothing. Any ideas where to go from here?

Update: just an update after posting I found the POST walkthrough and followed it step by step and still nothing. Would a bad CPU cause there to be no power through the whole board? I replaced the CPU fan as well to be sure and I can't seem to find any other possibility.
 

Answer:Computer shut down, no reason, no fans spin, new PSU and mobo

Yes a bad CPU would cause the board not to function, but bad CPU's are very rare unless they are damaged by handling or installing. What type of CPU is it? The socket type can matter for damage
 

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After troublshooting an Inspiron 620 which was not displaying anything on monitor and not posting I decided to remove the motherboard from case and attempt to fire the system up with only power supply, memory, CPU, USB connections to board plugged in. I deliberately left the case power button jack disconnected and used the tip of a screw driver to momentary short the power pins on the board. The system booted straight away. It seems whenever the case power control pushbutton wiring jacket is connected to the motherboard, the system would only spin the fans and not successfully power up. I disconnected the black "loop" wires on the power button jack and it now starts up. Does anyone know what those looped wires are on the jack?
 

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Hello Folks,

I'm not sure if my issue is with hardware (possibly MB?) or graphics card, so please forgive me if I've posted in the wrong section. The first problem I was having was random blue screens of death that displayed graphic card driver issues. I was able to remedy that by updating my graphic drivers and have not had an issue since.

However, ever since then I have been running into another hardware or graphics-related issue that is random and completely stumping me. What is happening is, I will be on my computer, leave and turn my monitor off, and (randomly) when I come back to use my computer again, when I turn on the monitor there is no signal and a black screen (e.g. when I turn my monitor on my desktop will pop up and the light on my monitor will turn blue, when it doesn't turn on there will be a black screen and the light on the monitor stays yellow as if it is idle). I have tried swapping out the monitor to see if that was the issue and the same problem persists, so it does not appear to be my monitor or VGA cables.

The only way I can temporarily fix this issue is to reboot/restart my computer and viola! The monitor works again and I can see everything. This issue is very random. Sometimes I can go weeks without an incident, other times this is happening a couple times a week. I honestly don't know if it's my motherboard or video card or what. My PC isn't overheating, I'm not overclocking, and all of my drivers are updated.

I'm not sure what... Read more

Answer:Turn Off Monitor, Turn On Later and Black Screen, PC Still Running

try checking your power options settings and set it to high performance then check in advanced power settings and do not allow hard disks to sleep

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I had it for nearly 2 years,Lenovo Y50-70 Touch -2 days ago while playing games on it, I smell a chemical smell coming from it so I immediately shut it down just in case. The next time I turn it on, it was fine the backlit keyboard glow red as usual but no display, and now it shut down after 4 seconds (with the fan running) whenever I turn it on except, sometimes It stay on (but still no display and no fan running).I got no experience into opening pc and such, I I tried opening it up and remove the dust that built us by quite a bit and tried to locate where the chemical smell was from, I though it was probably from the Fan or Coolers as it seems more strong there but not sure. After trying to turn the laptop on a few time the strong smell kind of dissipate a lot, and smell weaker.I been having a hard time trying to pinpoint just which part of the laptop is needed to replace. So if anyone could help me in the right direction it would be great. I just hope it wont have to buy a whole new motherboard x.xAlso idk if thats helpful information, but the first year playing games was fine, but the 2nd year and the laptop kind of overheated so I tried to cut down a bit and the fans were making more noises than ever. Especially when opening a new game or google chrome.

Answer: Laptop turn on for 4 seconds (No Display, Fan noise) and then turn off

A chemical smell to me tells me it's likely a failing/burnt out capacitor...It would be best to have it checked out at a shop...

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