Computer Support Forum

Computer runs but the screen doesn't turn on

Question: Computer runs but the screen doesn't turn on

So a few weeks ago we had to have some viruses removed from our computer, and it seemed like it was working again. Today, when we went to turn it on, the screen would only turn on for about 30 seconds, and then it would go blank. You could still hear the computer running though. Then when we shut it down and tried to start it in safe mode, we weren't able to. It said something like "No support", but when we tried starting it how we usually do, it worked. Now it's working really slow, and the screen keeps on freezing.

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Preferred Solution: Computer runs but the screen doesn't turn on

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

Answer: Computer runs but the screen doesn't turn on

Hi -

Is it a laptop or desktop?

If laptop, try connecting an external monitor. A laptop here loses monitor a few seconds after boot due to a known hardware issue.

If desktop, try another cable +/or monitor.

Regards. . .

jcgriff2

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Hello
Is there a way to turn off the screen of a Toshiba L300 19J while the system runs (plays music for example) ...?

Thank you.

Answer:Turn off screen while OS runs

Of course you can do this.

I don't know which power profile do you use but if you use ?balanced power plan? enter the settings and define ?Turn off the display? option to 1 minute.
I do the same when the notebook is running and when I want to listen my favourite online radio station. I set it always to 1 minute.

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it just vibrates like it turned on but nothing appears or lights up on the screen

Answer:I tried to turn on my nokia lumia 630 but the screen doesn't turn on

Originally Posted by Windows Central Question it just vibrates like it turned on but nothing appears or lights up on the screen Hi there - Have you tried leaving it on the charger for awhile? That's usually the first thing to try. Let it get some juice in it and then try turning it on. If that doesn't work, you may need to download the WDRT program on your computer and plug your phone in there to reset it.
If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See this link for instructions on how to join Windows Central.

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I have a dell inspiron n5110, it has the following specs: (2 years since purchse)
core i7
6GB b of RAM
nvidia 525 gt graphics card / 1gb dedicated
Windows 7 64 bit
640 GB HDD
The laptop was working fine yesterday and when i went to sleep i properly turned it off without any errors occurring. Today when i turned it on:-
-the power button turns on
-the three support buttons on the top right corner of the laptop flash
-i can see battery and power notification lights but the hard drive light doesn't blink or turn on
-i can hear and in fact glimpse the fan working.
-the screen shows nothing, it isn't a black screen because that would imply that the screen still turns on but the screen remains off. 
-I hear no error beeps or any kind of booting sounds
-I should also probably mention that recently the AC adapter of the laptop wasn't working properly and i had part of its main connecting wires replaced while keeping the circuit board or main work board intact, and it worked fine after that but i am guessing the repair may have something to do with this new issue.
I have tried the hard reset or flea power method, hoping it would solve the problem but it hasn't work even after multiple attempts. The laptop is no longer under warranty and if the issue is dire and i suspect it is, i would have to send the computer to a dell support  and repair center and i have  heard maintenance and repair costs may be as much as the laptop's price depend... Read more

Answer:Laptop doesn't boot, screen doesn't turn on, no error beeps or booting sounds are heard

This fixed my problem with my Lenovo. Thanks so much!

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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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I just put together my first computer 6 months ago. It abruply shutdow in the middle of writing a paper for school. I couldn't turn it back on right away. after trying a few times, it turned on. All the fans are working even the fan on the power supply, the motherboards lights are on. My graphic card in on the motherboard. I think it might be my power supply because when I first put it together I didn't plug in the smaller power connection to the motherboard and the same thing is happening, black screen. It's like my computer isn't giving my monitor any feed. I will have more info when I get home. I can't get in to bios or safe mode.
 

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to start it off its a 2003 toshiba satellite thats almost constantly in the shop. and i do know that this kind tends to overheat but i dont think this was the problem this time.

when the problem first came up i tryed starting it in early summer 2005. it was hooked up into a car adapter from ac into dc. i started the laptop and booted but a few seconds later just died.

that hard drive was just fixed a month or so earlier so im not sure if that is the problem.

right now you push the power button and it turns on. but it doesnt boot. and doesnt give any screen at all just black. i plugged it into an external monitor to see if it was just the screen but the external showed black also.

i hear it start like the fans and things. but then they just stop.

if anyone has any idea about this at all it is very appreciated.

Answer:Computer doesn't boot but runs

take it back to the shop or throw it away and bet a new computer thats not from toshiba.

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hello people i need little help every time i turn on my pc disk check runs how to fix that?
i let the disk check run but when restartet disk check appear again.

Answer:Disk Check runs everytime i turn on computer?

This tutorial may help.

Check Disk - Reset

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Hi, I have renewed my computer with new CPU, MB, RAM. Before I had ecs k7s5a, Athlon XP 2200+ and 512MB DDR1 400MHz. Before rebuilding, everything was working well and computer ran very stable. Now I have AsRock 4coredual-VSTA, C2D e4500(boxed version) and A-DATA DDR2 2048MB 800MHz(my graphics card is AGP Ati Radeon 9800pro).
I have win xp installation from before, but it want not start. I can see loading screen for 1 second, then BSOD cames up. Unluckily, it is not possible to read what is written there, computer immediately restarts.
So I tried live linux distribution(danix). It starts loading, but after a while it stops. Last written line is"Accesing KNOPPIX cd at sdv/dvd"(or something like this, it's after a short while).
Then I decided to run memtest. It was same as with BSOD. It is not possible to read what is written there, it immediately restarts computer. Thank you for any suggestion.
 

Answer:After rebuilding computer no OS runs, memtest doesn't run

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Hi,

Initially the fan was running on even after i turned the laptop off so i manually switched it off and then when i turned on the PC, the second light from the left comes on and i can hear the fan start but then within 2 sec the fan stops running and the light goes as well.. Tried the basic methods but with no luck. Can someone please help me here. Already spent a lot of money on this laptop and still getting problems on a daily basis.

Much thanks,
Ashish

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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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Hi, please help me

I contacted Major Geeks as I was infected with Antimalware Doctor and was instructed by TimW to remove it. After removal I noticed that after shutdown my pc wouldn't turn on when the power button was pressed. After turning the switch on the wall off and then on again, the pc turned on but now a few days later it is not turning on at all. The power button flashes amber when pressed but nothing more. It doesn't start up at all. Please tell me how this can be undone or fixed, thanks
 

Answer:PC doesn't turn on after shutdown. Power button flashes amber and doesn't turn on

Looking at your malware thread, to be sure you were given the all clean, I noticed you mentioned this




If i turn off the electricity socket on the wall and then on again the pc turns on when the power button is pressed.Click to expand...

Is that still the case?
 

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After I worked with it for few hours it started overheating. First my keyboard stopped working so I thought I should give it a rest and left it on the table (did not turn it off) and after I came back screen would not work. The button would lit up, but not the screen. I have had this laptop for only a month and already facing this problem 

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My laptop has recently stopped working properly and I can't find a fix. When I press the power button I hear everything whirling but the screen doesn't show up. I tried all of the suggested things like a hard reset and plugging it into a monitor but nothing has worked and I have no idea what to do now.

Answer:Laptop screen doesn't turn on

Hi there @Gleed,  Welcome to the HP Support Forums! I read your post and wanted to reach out to you to let you know that I will do my absolute best to help you get the display on your HP Pavilion 17-e067cl Notebook PC to come back on.  When we have come to a resolution, please share what worked for you with others by marking that post as an Accepted Solution. Note: please make sure that the AC adapter cable is not plugged into a power strip, surge protector, or secondary power source. It should be directly into a wall outlet. Please note remove any and all USB devices. Disconnect all non-essential devices, as these could cause some issues. You had mentioned that the computer is on, but the display remains blank. Please take a look at the Computer Starts but Screen Remains Blank document. If the notebook screen remains black or blank, and there are no error messages on the screen, then the troubleshooting provided should help determine if this blank screen is caused by a problem with the display.  The troubleshooting Black Screen Displays with No Error Messages During Startup or Boot document has more specific detailed steps to be able to perform the hard reset and see if you can get an external display to work. Could you please follow these steps again using this document.  If you look at the screen very closely, can you see anything fain... Read more

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The problem is inconsistent, but it happens more often than not. Everything powers up as normal, but the screen doesn't come on. An external monitor works fine with it.

The only time it does this is booting up. I can open and close the lid, shake it, or do anything else and I cannot make the screen turn off or on while the pc is running. It only fails to come on when it's booting up, which includes rebooting. Sometimes it will turn on 10 times in a row, and sometimes it'll only turn on only one out of ten boots, but it's inconsistent and absolutely unpredictable.

Any idea what's wrong and what I'll need to do to fix it? It won't be the first time I've had this thing apart. It has not been a reliable machine.

Thanks in advance,

K

Answer:Laptop screen doesn't always turn on (HP dv7)

Does it display the BIOS splash consistently? Or does it not display anything at all?

It's possible the inverter is going out if it's not displaying anything at all, even before Windows starts booting.

You could try updating your video drivers in the mean time.

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HelloRecently i got a problem on my laptop it's actually terrible i haved  a problem on booting it booted the windows logo and was showing me a blue screen,and i was searching on the internet to fix that blue screen of death somehow it went wrong , i entered the bios settings and did some changes over there and left the computer stay for a day and the next day i tried to power it on and the screen doesnt turn i don't now what to do the power on led and the battery led lights but the screen is off i tried a lot of thing like getting of the battery and puting it back or reinstalling the ram.Please help me! 


























1501260049311681082905.jpg ?2775 KB

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Hi,

I have my little NB200 since 10 months and everything work properly til the other day.

I never turn off the computer, I use to close it and suspend it. The other day the battery was empy and the computer were suspended so I connect the AC to the computer and everything looks right except for the screen is not turned on,

I reboot the computer and the screen didn?t turn on even at the beginning with the bios test. I connected and external monitor and everything is OK, I can see everything but the screen in the laptop continues black.
After one hour or so of using the external monitor, the laptop screen turns on and everything goes right again.

I was thinking that the problem could be some kind of issue with the driver so I recovery to the default state my computer.

5 days ago, the problem appears again. The computer had the battery empty and it was suspended. I connect the AC and I wait for an hour o so and in comes again, but this time, even with the AC connected, after 15 minutos of no using, the screen goes black (as I have configured) but never turn on again. I have to wait again.


Please I need some help because i was thinking that the problem could be the screen. The connection to the screen looks well because if I move the screen does not go on and off.

What could I do?

Thank you so much,

Answer:NB200-13E - Screen sometimes doesn't turn on

Hi jenriquegb,

To be honest it?s hard to say something but I think it must be a hardware malfunction if you have already recovered Windows to factory settings?
Either it?s a FL inverter malfunction or internal display itself? Theoretically it could be also caused from mainboard?

In my opinion you should contact an authorized service provider. The guys can check your notebook and make an exact diagnostic? If your notebook is under warranty, repair is for free. :)

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This doesn't happen all the time but it stopped a while ago but started again recently. When I look at the screen really close I can see the log in screen but there is no back light. The computer still runs so I can plug it into another monitor and switch screen settings and restart it from there.

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: AMD Phenom(tm) II N930 Quad-Core Processor, AMD64 Family 16 Model 5 Stepping 3
Processor Count: 4
RAM: 4094 Mb
Graphics Card: AMD Radeon HD 6500M/5600/5700 Series, 1024 Mb
Hard Drives: C: Total - 476837 MB, Free - 10842 MB; E: Total - 99 MB, Free - 61 MB;
Motherboard: Acer, Aspire 7551
Antivirus: Microsoft Security Essentials, Updated and Enabled
 

Answer:Screen doesn't turn on after sleep

looks like the back light has gone and needs replacing
 

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Recently my hard disk stuffed up (on my pentium 3 550mhz) so i changed it with another hard disk from a pentium 2.
i plugged that in and it worked fine. I then decided to take the cdrom and floppy from the p2 and plugged it in to the p3.
i also changed cases.
i used the cables from the p2 and found the screen would not turn on when i turned the comp on.
i changed the ide cables to the ones for the p3. It worked this time but only with the floppy detached.
when i plugged the floppy in, the screen wouldn't turn on again. and now even unplugging the floppy, my screen won't turn on.

what could be the reason why the screen doesn't turn on?
could it be something to do with power?
or using the wrong cables which stuffed up my motherboard?
or the floppy or cdrom?

Please help cause i'm a newbie at computers.

(i moved the motherboard back to its original case and plugged everything in the way it was originally when it did work but it still doesn't work now.)
 

Answer:monitor screen doesn't turn on

Sounds to me like it isn't POSTing, try removing everything except one stick of RAM, CPU, floppy, video card, and keyboard, if it comes on, try adding one device back till it fails again.
 

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Hello, I am having a problem with an e540 laptop where the screen doesn't turn on when the machine is powered on. There are also some other things wrong: The laptop cannot be powered off by holding the power button, it just makes a long beep as long as the button is held down. The only way to power off is to remove the power cord or battery. I have tried: - Removing the battery and power cord, holding down the power button for one minute, plugging it back in and turning it on. - As mentioned in a different post, removing the BIOS battery and putting it back, and turning it on. - Replacing the RAM. - Shine a flashlight on the screen, to see if the backlight is not working. The screen was still black.

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Hi, so I have an Acer Aspire 3002LMi and for as long as I've had it it has been susceptible to overheating easily and crashing. Normally this is resolved by manually cutting the power and everything is fine and dandy.

Now my sister was on the laptop and shut it down normally, and the next time I came to turn it on the green light on the power button came on, and I could hear some fans whirring inside and the CD drive was spinning, basically everything one would expect for a normal boot up, except there was nothing on the screen. No faint images, and the same happened when I attached a monitor and attempted to switch between screens.

I have tried many solution so far, such as opening up the laptop to see if the screen has come loose, and checking RAM, processor etc however everything seems to be fine and all connected.

Was hoping for any possible ideas as to how to resolve my problem, or whether it is more likely to be a component failure due to the overheating mentioned?

Sorry for the long windedness I am just trying to be as specific as possible to save answering all the basic questions over and over.

Thanks for any help
Matt
 

Answer:Laptop will not turn on/screen doesn't work

If you see normal views on the external screen, you likely have burned out your LCD Screen inverter. You should be able to find replacements online, but you need experience installing inverters. There are about 18 screws to remove since you must disassemble the top half of the case, and remove the screen to access the inverter socket which is at the bottom of the screen. Usually you can get an inverter for $15, but there are almost no two alike so be sure you have the correct one.
 

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I had been having battery trouble before but the laptop was working fine. The power and other lights on the keyboard light up for a second then it shuts down with a single beep. Then doesn't respond to pressing the power button for a few seconds. I have installed a new battery so that's probably not an issue anymore.

Answer:Laptop won't start, screen doesn't turn on

This should help:http://support.hp.com/us-en/document/c02222922andhttp://support.hp.com/us-en/document/c01732674

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I was watching this video which was showing how to make my pc better when running games! After watching the video and restarded the pc i didn't turned on! Just got stuck on the motherboard screen! I preess keys but it doesn't do nothing so i can't go into safe mode apparently too. What i think it scrud up my pc was making it boot using all the cores and also perhaps installing a program called park control and then did what the video showed. The link of the video is i'm very worried that my pc is gonna be out of funcion for a long time, worse, that i have to spend money. I does't even load the sign in screen! My motherboard is a gtx 750 btw! I need serious help pls! Thx, im o. Windows 10 btw, im not sure if this is the correct category to publish this post but i hope it is
 

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In the action center, turn off Smart Screen doesn't stick.

Answer:turn off Smart Screen doesn't stick

It wont, its normal. Maybe in the next builds it will.

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Hi, I recently updated my DELL L502X to Windows 10 from Windows 7. All drivers have been installed and Device Manager shows no problem. However I'm seeing a weird issue. I'm using an external monitor (ASUS) through HDMI. I'm setting the display to show on external monitor only. In Windows 7, everything works fine. After the Windows boot logo disappears, laptop screen turns off and external monitor turns on. In Windows 10, however, there is an issue. After boot logo disappears, external monitor turns on, and laptop screen turns off - but not completely. There is no content anymore but the back light is still on. If I switch the display mode to Duplicate or Extend (just to turn on the laptop screen) and switch back to Second Monitor Only, the laptop screen can turn off completely.

Has anyone seen a problem like this? Both monitors are shown as Generic PnP Monitors in Device Manager. I don't know if this is a driver problem or something related to my laptop. The bottom line is in Windows 7 there is no such a problem.

Any suggestion or help would be greatly appreciated. Thanks!

Answer:Laptop screen backlight doesn't turn off

This is most likely a bug in Windows 10, but it shouldn't cause any harm. Could be that Windows 10's external monitor feature probably has different settings than Windows 7, such as keeping some power in the other screen. Anyways why would you care? Just live your life with the plug in the wall and have fun with Windows 10!
Have fun!

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I am using a Dell Inspiron 1501 and I spilled coke in it like a month ago, I have already replaced my laptop but have tried turning it on and it does a 1-3-1-3 beep code. I tried looking up solutions but I'm really not sure what to do. Any solutions to this problem will help. This is what I've found

1-3-1-3 22h Test 8742 Keyboard Controller Troubleshoot the keyboard. Troubleshoot the keyboard controller. Troubleshoot the motherboard.

1-3-1-3 A20 gate failure.

I'm not really sure what they mean or what I can do in this situation. Any help is appreciated.

I have been able to turn it on a couple of weeks ago after about 100 tries or so (lol) so is there anyway I can just turn it on only this once. I'm only trying to turn it on to retrieve some old files.
 

Answer:Laptop screen doesn't turn on but beeps

I am inclined to say that too long has gone by for an adequate fix. Normally, following spillages, you need to remove the battery, HDD, keyboard, RAM (pretty much all of it), wipe up what you can, and then leave to dry for 24hours (more if possible).

I'm afraid the damage may have already been done, BUT, may still be worth a try. Remove all components that you can (a quick search online should help you with your particular model), in particular those mentioned above (remember to use an anti-static wristband and mat when working with components). Clean up any sticky coke and dust, etc. then LEAVE everything to dry. Who knows, you might get a working laptop from this.

However, if you're not that bothered and just want the files from your HDD, invest in a HDD usb dock. They're relatively inexpensive and allow you to connect your bare HDD to your computer via an external docking station. Just make sure you take the battery out of your old laptop before trying to remove the HDD (again, make sure you have some antistatic equipment to do this).

Good luck
 

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It's been a couple of weeks now, my Yoga 13 screen does not dim or turn off when the power cord is plugged in.. I check and re-check the Windows Power Options and it still says the same (Dim in 5min/Power Off Display in 10min/and Put Computer to Sleep in 30min)... Any ideas? Thanks!!

Answer:Yoga 13 Screen Doesn't Dim or Turn Off When Plugged in

hi GzyOnline,
 
Can you try to:
1. Check this article (see option two)
2. Disable Adaptive Brightness
 
Also, does the laptop screen dims when running on battery?
 
Let me know your findings
 
 
Regards

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For the past few days, I've noticed that my screen doesnt turn off when the lid is closed. On closer inspection, I found that the lid closed sensor had been pushed under the battery somehow. I pushed it back in place, but it doesnt do anything. Anyone have any tips to fixing this problem? Thanks.

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Hi again, I write this because sometimes I tried to turn on my computer but it doesn't start, then I press the button again and the computer begin to running, I want to know Why it happen?

I have a UPS and Windows Me, but I don't understand the problem.
 

Answer:My Computer doesn't turn on

I'm wondering ( and this would be really easy to fix ) how old is the case ? Maybe the connection in the back of the power button is screwed up ...
Also could you post the system specs .
 

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First of all, sorry that my first post is for help but the problem is how I found the forum.Basically, one morning I turned on the computer and was just doing my daily things when all of a sudden the computer turned itself off, it was very sudden, no signs of any problems or anything. Now if I try to turn it on, the power button gets pressed like any other useless button and does nothing. Makes a little click sound like always, and the computer does not turn on.My belief is that this is harddrive related; however I am not entire certain if that is what the problem was. My harddrive is 40GB Western Digital harddrive, and I'm currently looking for the box to give you all more information but can't seem to find it, I will continue looking however.I tried turning off the powerbar, cooling the area around my mid-tower case, and cooling the case itself down, letting the computer rest for 24 hours, and then turning it on, but same problem, pressed the button, it didn't turn on. If this isn't a harddrive problem, anyone know what it could be? If you need information on any other parts of my computer and whatnot, please ask I'll be more than happy to provide you with the information.  Also, if the harddrive did die out on me, is there anyway of fixing it,I will respond ASAP if there are any other questions.THANK YOU! ... in advance.

Answer:Computer doesn't turn on

It could be a power supply, possibly the hard drive, maybe even something else.It seems that to solve this mystery there needs to be a little "operation".  If you've got the know-how to open up the case (which I am NOT advocating) UNLESS you have experience, I"d recommend taking the system to a knowledgeable computer repair person.  Alan <><  

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My computer just suddenly shut down. There was no shut down screen, it just went black out.

After I reset my power generation. My computer doesn't turn on anymore. Only the monitor is the one can be turned on.

Could you please, tell me why is this happening?

So please, oh please, reply me back, and tell me what to do!

Answer:My Computer doesn't turn on

Sounds very much as though your power supply is the culprit.

Fault-finding flowchart here: PC Power Supply Failure Diagnostics - Computer ATX Power Supply Troubleshooting and Repair

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When I turn off my computer the power supply doesn?t seem to turn off, the fans are still on and so are the LEDs. Windows shuts down and the HD stops too. The only way to turn it off is to press the button on the back. This does not really bother me but I would like it to totally turn off when I say it to and not have to press other buttons. Is it bad that this is happening and/or is my PSU shot? All of my voltages monitors show the same thing as before, nothing has changed. My PSU is a Thermaltake Toughpower 700W Cable ManagementPC specs:Core 2 Duo E6600 @ 3.4 GHzEVGA GeForce 8800 GTS 640 MB4 GB of OCZ SLI-ready RAM500 GB Hitachi HHD

Answer:Computer doesn't turn off

How long have you waited for a complete shutdown ? ?Temp sensors to cool down the system before power off ? ?Not sure on this one...what MBoard ? ?

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Hi Everyone,
I have a dell desktop which had some problems and made a weird sound whenever I turned it on so I decided to open it up and take out the HDD and plug it into a desktop that I built and backup the data and reformat the drive. So then I put the HDD back in and now whenever I try to turn the computer on it doesnt even turn on. Before it wouldn't show me anything but atleast when it was turned on you could hear everything spinning as the power went to all the components. However now the MoBo lights up and thats it, I tried pressing power button multiple times but nothing. All the connections seem to be secure, the pins unbent and the parts snug into their slots so I don't understand what the problem could be. Please help!!!
 

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Hi, all. I wasn't there at the time of occurrence, but my brothers have told me that while they were on their computer, it started to ''smell like permanent marker,'' and next thing they knew, it shut off by itself.

So, I came and opened their computer, and I used a compressed air can to remove any dust that was sitting inside. I reconnected everything and put the PC back in its place, but it still doesn't turn on after multiple tries.

The monitor works, just the PC doesn't.

What else can I do? Is the PC a goner?

Thanks.
 

Answer:Computer doesn't turn on

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Ok the specs are in my sig...

This computer is almost 2 years old and I am seeing some signs of it being dead *lol*

running windows 7 (i think not important because it doesnt even go to the bios screen)

Symptoms included:
1. In the last month, when I turn on my computer, it doesn't turn on immediately and go to windows, but instead, it restarts for at least 5 times and then it goes to a "good state"... (take note that it does not go to the BIOS screen in the 1st 5 restarts) after that can I only use my computer, im not restarting because it i restart, it happens again...

2. Now, when I turn on my computer, it doesnt go to the BIOS and restarts over and over again... no display, no hard drive activity (referring to the light)...

I reseated the video card, the 2 memory cards, then I tried to fire it up, but to no avail, it gets the same thing... is my mobo broken? or is it another hardware?

sorry for my english, im not good at it...

please help me techies out there! any information will be greatly appreciated...

Answer:Computer doesn't turn on

It's probably a bad component on the motherboard.

If I were you, and I really wanted to fix that motherboard, I would start by checking the capacitors and replacing any that look even slightly off.
Then I would reflow every solder point on the board that looks discolored/dirty/not super shiny.

After that, I would pour some liquid rosin flux over the Northbridge, and southbridge, make sure that it has a nice coat on the underside, and then heat it up with a pen torch or reflow station.

This will most likely fix your issue, but it's sort of hard to guess at what the problem is by your description.

If a computer won't boot, and you've tested each ram stick individually as well as together, then the problem is likely failing hardware on the board itself. You can pay someone to perform this maintenance on the board for around $150, but it's cheaper just to buy a new motherboard.
Of course I don't know because I'm not looking at the motherboard. It could just be something simple. I would suspect that during the first 5 reboots one of the capacitors isn't holding a correct charge, and it takes a few restarts to get it to hold the correct charge. This is a guess though, I don't know.

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hello, today morning i turned off my computer and on the evening i tried to turn on but it was unsuccessfully, my monitor showed me only a blank screen and my cooling processor been working with the maximum rotation turn and computer light (outside) doesn't work either (but it was working on morning) also I tried start computer with disconnected hdd, ram etc. but still got problem, any suggestions ? maybe motherboard is dead, it's quit old ?

windows xp
motherboard - p6pe-vm
 

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well one day my computer just shut off...i tried everything..the fans on the motherboard spin..i've tried changing everything but the power supply...would it be the problem?

i've hooked up different hd's and put a diff mobo and processor and even memory...

let me know what u think it is
 

Answer:My computer doesn't TUrn on..HELP!!

What are the things that you've done before the problem started? Can you elaborate more?
 

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Ok here is the problem we been having. It seems that we have problems with our breakers going on and off constanlty but this time it really affected our pc. Our stupid landlord didn't pay the electric bill so our power was shut off durring the night. once it was back on we tried starting our computer back on an guess what nothing happened.

So i checked things out. first i checked the reset switch and we bought a new one of those, new power cord for the power supply, nope that wasn't it.

There are two color light bulbs by the reset switch the green one comes on when the computer is working. its not turning on and the yellow remains on tho so i figured its still getting power but maybe not from the power supply but from the battery since its a pretty big battery. But the fan isn't running, neither are the drives and other things so i think it is in the power supply. Do you think it might be the mobo tho? This computer is only two years old and it has a celleron proccessor and so i was also wondering could it be the processor too?

So here is the questions, what do i replace first? The power supply , proccessor, ram, mobo or just buy a new comp?

Just to let you know yes its plugged in and its turned on and the monitor is turned on also.
 

Answer:Computer doesn't turn on

First thing you should buy is a battery backup. Computers are very senstive to electrical problems, using a battery backup and a good quality powersupply will save you possibly thousands of dollars.

Most of these issues I've run into have a sort of chain reaction effect on the destruction of the PC. In all likelyhood, your powersupply is fried. If it was a good quality powersupply then that should be the extent of the damage, however if it didn't fail correctly then your motherboard could also be damaged. Depending on the quality of your motherboard, any various components of you PC could also then be damaged.

So giving that I understand your situation correctly, I'd first buy a battery backup (I prefer APC but Belkins are decent), then I'd buy a Powersupply (not a cheapo 350w Powmax, look for a good name like Enermax, Antec, Fortron, OCZ, or Seasonic) then see if your PC will start up. If its a no go then you need to replace the motherboard (at which point a system upgrade becomes an entertaining idea).

If at all possible try testing the components of your PC in another working computer so that you can devise what's good and what isn't.

But regardless, get a Battery backup.
 

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Hi everybody. I'm new to techspot.
My wife's computer doesn't turn on. when she hits the power button the green light comes on for a few seconds and then it turns off again. any ideas? Her son normally pulls the plug off the wall to turn the computer off (silly boy).... Thank you in advance for your help
 

Answer:Computer doesn't turn on

Hello, jhsa, and welcome to Techspot :wave:

Please take a look at the following threads to make your experience here as enjoyable as possible

Message for all newcomers

SNGX1275's Guide to making a good post/thread

The Techspot FAQ

If you could take a minute to fill in some of your profile information that would be helpful to all members of the forum
Knowing someone's location in the world can be extremely helpful, even if you just put a country.

Also remember to post any problems or questions that you have in the appropriate forums

With regards to your problem, that is a pretty bad way to turn off a pc it could be that your power supply has broken, take a look through this thread to make sure, either that or the motherboard or cpu could be damaged from the power suddenly disappearing.
 

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My power went off last night (computer was off and plugged into a surge protector). Now the computer won't come back on. I turned on and off the powerbar but nothing is happening with the computer. I finally gave up and came to work. Any suggestions I can relay to my husband so he can get it up an running? Thanks.
 

Answer:Computer doesn't turn on

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Okay, so my desktop computer used to be on all the time and then all of a sudden it went off and it just simply is NOT turning on. Pressing the button to turn it on does absolutely nothing. I've tried leaving it unplugged for a week, and it still didn't work. There is a light on the motherboard so I know that the motherboard does have power but I can't figure out what's wrong. Can someone please help me turn this pc on?
 

Answer:Computer doesn't turn on

The problem sounds like the power supply, if not that, then the motherboard. A good way to narrow the problem down, would be to swap a known working power supply, and see if the computer boots up. If it doesn't, there is a problem with the motherboard (considering all wires and cord are connected properly and there are no other power issues such as AC outlet, surge protector, bad PSU power cable etc.)
 

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I need serious help. I got to school online and am in a really hard class. Now, my computer is flaking out on me. I like to turn my computer off when I am not using it because periodically the computer sounds loud like I am doing twenty things at once when I am not even using it. Then my computer gets quiet again. I have XP Home Edition and it doesn't turn all the way on sometimes. In these instances, all the lights that are supposed to be lit on the tower are, but the monitor doesn't turn on. I have to hold the power button in until the tower turns off, I wait about thirty seconds then turn on the power again. It is like Russian Roulette, sometimes it works, sometimes I have to do this again. It has gotten slower too, my computer is so freakin slow, and it just froze on me for a moment. I am not sure this next piece of information will have anything to do with this but last week I had ran and downloaded the MS Essentials program for viruses and spywares. It said I had Win32/Induc.A, and it said it was a virus. All the files listed below it I deleted even from recycle bin so I thought it was gone. I looked up information about the Induc.A and it said it attaches to Delphi files if you have them and copy files and rename them as well, which I did a search and found no delphi files. Then the MS Support Page said that if none, it will just bounce around your system in a richochet style.I will check in later, to see if I been hooked. Thank you.

Answer:Computer doesn not turn all the way ON sometimes

<<I got to school online and am in a really hard class.>>It took my feeble brain...a few minutes to realize that should read "I go to school online" .System manufacturer and model?Have you seen http://www.microsoft.com/security/portal/T...Win32%2FInduc.A ?Did you follow the suggestion to run a scan with either product listed?What AV program is installed on your system?Do you think that your system is infected now?Louis

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Hi,
I have a P4 1.4ghz with Win Xp, recently I've noticed 2 problems. One is that my computer will not turn off. I tell it to turn off and it just restarts. My other problem is that my CD drive (d:\) isn't reading anything. It is recognized by the Device Manager and i can eject it, but it won't read any CD iput in. Does it just nead cleaning????? I just installed 256mb of memory if that has anything to do with it.
Thanks!!
 

Answer:Computer Doesn't Turn Off

Here's a good place to see about your shutdown problems:

Windows XP shutdown troubleshooting

Regarding the CD drive, have you done anything to it recently? Maybe you knocked the cable loose when putting that new memory in?
 

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Hello everyone!! (I think I'm the only one here though on a Saturday night )

Anyway, I've been reading through the forum to see if I could find some answers to my problem with my HP and the closest one is "Old School" dated September 1, 2006. So, I've noted some of the answers and I'm going to try some things (that apply) tonight with my computer.

However, the initial problem started when I began to notice my computer slowing down, so I decided to remove some programs, files that I no longer needed. Afterwards, it didn't seem like it help any at all. A few days after that I began to get errors saying the memory was low and so I decided to completely start all over, going back to when I bought the computer new. However, when I attempted to do this it wouldn't let me saying the memory was low or not enough memory. Next thing I knew my computer completely crashed and I haven't been able to get it back on. Here are some of the things that are coming up when I try to start it.

1. Stop: c000021a {FATAL SYSTEM ERROR}
The session manager initialization system process
terminated unexpectedly with a status of
(0x000003a (0x00000000 0x00000000.)

The system has been shut down.

2. Stop: c0000218 {Registry File Failure}
The registry cannot load the hive (file):
\system root\system 32\config\SOFTWARE
orits log or alternate.

It is corrupt, absent or not writable.
Beginning dumping of physical memory.
P... Read more

Answer:Computer Doesn't Turn On

Welcome to Bleepig Computer.From what you have posted you may have a corrupted registry. The explaination on how to recover is very lenghty and complex. The best option will be for you to read the Microsoft KB and post any question you may have with us. There are two KB article that apply to your Post.If for any reason you are not sure or fell you cannot complete the task, STOp and ask questions. I feel sure we can help you thru this but you will need to read the articles.Error Message "STOP: c0000218 {Registry File Failure}"How to troubleshoot a "STOP 0xC000021A" error

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I have assembled my new cpu but it doesn't turn on. This is my second time assembling my computer and my first time went on smoothly. But this time I missed on something and I have no idea what it is. Every time I press the power button, nothing happens. I'm sure there is power on the board because the led indicator is active. I also noticed that the cpu fan moved a little as if it will spin, but it didn't continue.

I'm using ASUS P5G41-M Motherboard..
 

Answer:Computer doesn't turn on

Ensure that you've plugged in the 4 pin CPU power connector and fan connector.
 

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computer does not turn on unless i hold the power button down

Answer:computer doesn't turn on right

try using the left hand.

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Hi I've got an Acer laptop with Windows XP Home Edition and about a third to a half of the times I shut down the computer it freezes at the blue page that says windows is shutting down, and doesn't turn off. Can anyone tell me if they've came across this problem before and if there's anything that can be done about it? Thanks
 

Answer:Computer doesn't turn off

If your computer does not turn off the power when doing a shutdown,
you may need to edit the registry.

Start Regedit
Go to HKEY_CURRENT_USER\Control Panel\Desktop
Edit the key PowerOffActive and give it a value of 1
You can do the same in HKEY_USERS\.DEFAULT\Control Panel\Desktop
Or:
You can go here:
http://www.kellys-korner-xp.com/xp_tweaks.htm
Scroll down to #76 and click on the word "Off" ,when the file download box opens up,click open.
 

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Hello --
I've got a Dell Inspiron 6000 laptop, it's about 4-5 years old. I'm not very tech savvy.

A weird thing started happening recently:

Whenever the computer shuts down (Standby, hibernate, or full shut down), either b/c I power it down or just b/c I close the lid, the computer refuses to turn on again.

When I press the power button, the fan starts up, the power light comes on, the caps lock light blinks 9 times and then it turns off again. Happens regardless whether the laptop is plugged in or on battery.

I have discovered that I can get the computer to start up by holding down the "play/pause" button bellow the touchpad and pressing a bunch of keys on the keyboard simultaneously. This causes the computer to turn on and opens a program called Dell Media Experience (which I've only used occassionally before). But this "solution" is not reliable and seems to be getting less and less effective(the first time, I just pressed the button, since then I've had no success unless I also hammer the keyboard a bit).

At this point, I'm afraid to let my laptop sleep or turn off for fear that it will never turn back on.

Anyone have any idea what the problem is? PSU? Motherboard? Something easy to fix that a non-techie like myself is just unaware of?

Plz let me know ASAP.
 

Answer:Computer doesn't want to turn on

You might want to check out data from Dell also:

http://support.ap.dell.com/support/...1&component=-1&lang=-1&doclang=en&toggle=true
 

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Hey
When I turn on my computer the monitor doesn't turn on, the light is green at first but then turns to orange and when the monitor did work this morning, the computer wasn't booting, it was stuck on a screen saying the RAM and stuff...The fan spins but nothing happens...
I have no idea what's wrong with it and there hasn't been anything new done to the computer. All the cables are in and where they should be.
What do I do?
 

Answer:Computer doesn't turn on

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Hi everyone,

I apologize if it's been asked before, but I thought that results may be different because I have my own set of specs.
I have bought parts for a computer 2 days ago and was very exited to assemble them. thinking that I can finally play games on high graphics. My specs are as the following:
i5 4670 processor
gtx 770 graphics card
asus z87a motherboard
nzxt 410 case
cx750 power supply
8gb corsair ram

I have hooked everything up, as according to the manual, I did hook up the 8pin and the 24pin to the motherboard from the power supply, ram and cpu is installed properly, everything is wired correctly according to the manual

FROM THE CASE:
- hd audio cable goes in the AAFP port, a usb 2.0 goes into one of the usb ports.
-usb3.0 goes into the usb3.0 port
- port for the fan goes into one molex connector
- + and - pled is hooked up right, as well is the power and reset switches.
others:
- 24pin and 8 pin from the power supply is hooked up right.
- ram is installed

The problem here is that when I press the power switch, nothing happens. There is just a green LED on the motherboard that lights up when i connect power. Am I doing anything wrong? I thought with these basic things the computer should at least turn on. I really hope that it's not "defective equipment" because I bought them brand new 2 days ago. Hopefully I didn't break anything, nothing should break so far, and hopefully nothing burned or fried because I didn... Read more

Answer:Computer doesn't turn on

Welcome to the forum

Remove all add in cards, hard drives, disk drives, use one stick of memory in dimm0 then switch to dimm 1, then switch to a different stick. Since nothing happens make sure you have your power switch connected properly and that it works, double check the front header diagram for the power switch pins and if you get nothing at all short the two pins with a screwdriver to see if it fires up. Your video card will also require one 8pin pci-e power connector and one 6pin pci-e power connector so check those also.
 

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First of, my monitor exhibited signs of flickering during start-up, but only minor ones and would just stop at the 'Welcome' screen of windows so I didn't give it much thought. Iv'e been using it with the cpu the same time I bought the monitor.

But after some time, the flickering got worse. It went from 1-2 second interval flickers to a whole 10 seconds of blackness before it showed anything.

Now,Iv'e got a new cpu but still using the old monitor. After a day or so, the monitor exhibited the first symptoms of my first cpu, so I just dismissed it. But after a week, It got a hell worse, before I even start-up my computer, the monitor doesn't show Analog/Digital at the top-left corner of the screen. PLUS my cpu keeps restarting after I pushed the ON button after 10 seconds or so.

My question, Is the monitor responsible for the restart and what could be the reason for the flickering?

Thanks for a fast reply.

Answer:My Computer monitor doesn't show anything when I turn my computer on.

  
Quote: Originally Posted by pokeman5


First of, my monitor exhibited signs of flickering during start-up, but only minor ones and would just stop at the 'Welcome' screen of windows so I didn't give it much thought. Iv'e been using it with the cpu the same time I bought the monitor.

........
My question, Is the monitor responsible for the restart and what could be the reason for the flickering?

Thanks for a fast reply.


Welcome Pokeman5 to the windows 7 forums.

The graphics card might be your culprit. Please update your system configuration settings under user cp so that others can maybe help you.
Usually the monitor won't stop your machine from booting. The graphic card most likely be the cause.

There is also the possibility that your power supply could be defective or going bad. Lots of possibilities.

Rich

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Hey guys,

Just got a brand new laptop with vista premium. had to send it back a week ago coz i kept getting a black screen at random moments. Turns out it was a virus. So it went well for a week.. now its done it again. so i guess i have a virus again. Anyway... Whats happened

Random black screen. Monitor stays on (there's still light).
It is RANDOM! i could be working, not working, just playing music, not even close to it, any random time etc etc.
Computer stays turned on. I have to hold down the power button to turn it off. Then its back to normal straight away.
Have been told it is a virus
Running vista premium

Don't know what else to say. Thanks. Really appreciate the help and effort.
 

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I have my power settings set so the screen saver comes on after 10 minutes, and the display turns off after 15 minutes. Everything starts off hunky dory. Though whenever I add a monitor or change resolutions there's a 50/50 chance I'll get a "windows explorer has stopped responding, windows explorer is restarting" error. Once that restarts my screensaver/power options won't start again until I reboot the computer.

Previewing the screen saver works, but it won't start up by itself.

Changing or resetting the power plans has no effect.

Answer:Screen saver doesn't turn on after explorer crashes

The screensaver and some of the power functions are handled by the video drivers. Update those if possible.

If those video drivers are already up to date, then let's start looking for a reason for explorer restarting. Use Process Explorer to see you we can find an app that is exiting and taking explorer down with it. You can change one setting to make it easier to see such an app:
File > Options > Difference Highlight Duration
...set that to 9 seconds.

If Process Explorer does not help, then take as many things out of the equation as you can via this process: Troubleshoot Application Conflicts by Performing a Clean Startup

If a clean boot does not stop explorer from restarting when you change screen resolutions then spend some time with these steps: Troubleshooting Steps for Windows 7

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Hi, I hope that someone will help me out of this problem.

After unmounting the satellite top cover the lcd screen that doesn't turn on anymore but I guess the system works properly because I can hear the windows access "jingle". I think I reconnected all the cables (green and white connectors for the video card) but I'm not sure about the brown/white/black thin cables from the lcd panel. That's it

Answer:Satellite 5100 - LCD screen doesn't turn on anymore

Hi stefano88,

Why you have disassembled the LCD?

To be honest I don?t know what cables you mean have you also connected the FL inverter to LCD display? This is necessary because FL inverter controls the backlight of your display.

Can you post a picture of the cables that you mean?

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Hello, so I bought a lenovo ideapad 100-15IBD about a month ago, and it has been working fine until today when my screen wouldn't turn on. I turned my laptop on and the fan starter working but the screen was still black. Last night it worked fine and it was updating and I guess after updating it didn't work. So what should I do?  I already tried to restart it but it didn't help. 

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Hello everyone,
so just the other day I (finally) upgraded my Lenovo Ideapad Z510 from Windows 8.1 to Windows 10. So far, I'm pretty happy about it, so I'm definitely not regretting it, but there is one thing that it's starting to frustrate me.

Basically, when the computer is idle, the screen doesn't turn off after the set amount of time (I have it at 5 minutes on battery, 10 minutes if connected to the AC charger), and the laptop doesn't go to sleep either (it should do so after 10 minutes on battery, 30 minutes with the AC charger). It's really annoying, and I can't figure out why. I have tried to change the settings, disable apps and programs and such, but nothing has solved the problem so far.

After looking it up on google, I read about people who had this issue and apparently it was caused by some USB gaming controller connected to the computer. I have no such thing though, the only USB device I have plugged in is my wireless mouse (Logitech). I did try to remove it in case that was the problem, but unfortunately nothing changed: when inactive, the computer still doesn't turn off the screen nor it goes to sleep.

I have noticed that if I leave it idle for a while, say 1 or 2 minutes, at one point the brightness decreases slightly for, like, less than a second, and then it goes back to normal, as if someone touched the mouse to "wake up" the laptop (but clearly no one touched anything).

Did this happen to anyone? Any idea about what could be causing it? So an... Read more

Answer:Laptop doesn't turn off the screen or go to sleep when inactive

Maybe too obvious but have you chosen the right "Energy Profile"? I once set up a custom balanced profile then came to the conclusion the default profile was still active.

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I've had this happen now with my last 2 custom built PCs. I'll leave my computer on overnight and when I return to it in the morning, my monitor is black from being turned off, but won't wake up when I move the mouse or use the keyboard even though they have power (as indicated by their glowing lights). The only common hardware components are the video card, PSU, and DVD drive. My current machine is:

Win 7 Ultimate x64, latest service pack
Gigabyte z97x-ud5h mobo
Intel i4790K
ATI Radeon HD 7970

My previous machine was:
same os (same disk even)
Asus Crosshair v Formula-z
AMD FX-8350
same video card

I do not have any power saving features enabled. My monitor is set to turn off after 15m, but in the advanced power settings I have turned off all sleep and hibernate features. If I walk away for an hour or so, even though the monitor is off, it will wake back up when I move the mouse/keyboard. It seems to only be after I leave it on overnight. The only other common denominator I can think of is that I use Acronis to run a back up on my system around 5am, although it's rather short as it's just doing a diff.

Again, all power save features are off (or should be at least) so I'm not sure what would be causing this, especially given the rather different hardware. I'm wondering if it's the video card at this point? But then why would it only be causing issues after being on overnight?

Answer:Screen doesn't turn back on sometimes after leaving on overnight

Quote:
but in the advanced power settings I have turned off all sleep and hibernate features


I had that problem until I determined I also had to set the Hard Disk to Never shut down in the Advanced settings, apparently keeps Windows from losing track of itself.

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Everything turns on, fans and everything. It's a completely new build. No input detected from a Samsung monitor.

I've swapped ram sticks to see if one of them is dead
I've reseated the video card

Don't know what to do.

Gonna pop my 4870 X2 into the computer to see if the video card is DOA. If not, the motherboard?
 

Answer:New Computer Build: Monitor doesn't turn on / Monitor doesn't initalize

your vga could be causing the issue, but that's only if you dont have onboard video as well.

Next time you post with a problem, make sure you give us detailed specs of your rig, when you dont its like saying "Hey, I have a red car, and it wont start."
 

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I was operating Itunes on my DELL Desk Top when all the sudden the screen went black and the music stopped.  I rebooted the computer and it looked as if it reboots but I cant tell because nothing is on the screen.  The green hard drive lights appeared to be flickering as it normally does but nothing is showing on the monitor.  The monitor appears to still work with it's power light on but no input is coming from the computer.  I don't think it is the monitor because the music stopped when the incident happened. I don't know if this is a hard drive failure or something to do with a power failure from inside the desk top.  any ideas of what would the problem be?  Of course a computer shop will charge me $120 to just look at it.  The Desk top is 7 years old and i guess i have to buy a new one but I need my data from the hard drive.Any suggestions is appreciated!  Thank you!!!

Answer:Computer runs but nothing on screen

When you reboot the computer, does it show anything at all on the screen?Does the bios version appear?If you can find another monitor to swap in there temporarily and it works, you can rule out the computer itself being the problem.Also, post the make/model of the computer..

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Hi there, please go easy on me, I'm not computer smart ;(.

I have a Packard Bell computer with a Nvidia graphics card (see my specs for proper info) which has been working fine with no problems for over 2 years. Then yesterday it just decided it didn't want to show anything on the screen when I turned it on. Now the computer would start (lights, fans) but not show anything on the screen. It also beeps at me, 1 long beep and 2 short beeps with basically no pause between beeps; which I tracked down to be a Display adapter problem (MDA, CGA).

I tried swapping out my graphics card with a "PNY NVIDIA GeForce GT 220 PCI-E Graphics Card" but to no avail. I have reseated the CMOS battery in an attempt to reset the BIOS and am running out of ideas.

Please feel free to ask questions about my system and i'll do my best to find an answer. Thank you for all answers on this matter.
 

Answer:Computer Runs But Nothing On The Screen??

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Hey, like the title says, when I shutdown my computer, sometimes it don't shutdown at all.. everything will turn off like monitors, other devices, etc but the computer just don't turn off. Sometimes it'll turn off but it takes like 10 mins or so. This computer is not slow by any means, I just custom built it for gaming. Anyways, I've tried cleaning it up using bleachbit, defragging it, cleaning the registry, and I even ran chkdsk to repair errors on the drive which took hrs but it's still doing the same thing so I came to the conclusion that it might be a program that might be not responding and just doesn't want to end. What do you think?

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Hey! So basically my friends computer doesnt turn on properly.
He gets a screen saying
"Windows has not started properly, choose a mode:
Safe Mode
Safe Mode with networking
Resume last settings etc"...

No matter which one you choose windows still doesn't boot. A blue screen comes up which reads:
"STOP: C0000218 {Registry File Failure}
The registry cannot load the (file):
\systemboot\system32\config\SOFTWARE
or its log alternative
It is corrupt, absent or not writable"

We've put the recovery disc in etc and no hope. Any advice on what to do would be great thanks.
Oh, and this happened just after he defragged his computer. He restarted it after the defrag and this started happening...
 

Answer:Computer doesn't turn on, maybe a virus?

Try this link:
http://support.microsoft.com/kb/307545/en-us
You have a corrupt registry hive file (duh! The error message told you that!). The above link is a step-by-step guide on fixing the problem. You'll need your XP CD so you can enter the Recovery Console. Be sure to follow each step exactly as described; there's some command typing involved so be VERY careful when typing the commands and don't mess up or skip one by mistake. You'd be better off printing the article for reference whilst peforming the repair. You might want to read thru the steps a couple of times first, just so you have a good idea of what's happening... good luck!

hd2k
 

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my computer does turn on... but the monitor acts as if the computer were still turned off, the mouse doesn't turn on either, nor the keyboard, the cd rom doesn't respond either, the computer is turn on but it's as if it weren't.. what can be my problem and how do I fix it, if it can be fixed?..please help
 

Answer:computer doesn't turn on..technacally

I would be trying a new power supply as my first step as it sounds yours has partially failed.
 

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Hello,

I've just returned from a weeks holiday and I tried to turn my computer on but it fails to do so.

I left my computer as I normally do. I use it everyday usually, but returned to find it not working. The red light on the front of my case is on, indicating that there is power to the machine.

I opened my case and pressed the power button to see if anything happened. I noticed that my fan moved for half a second when I pressed the power button, but that is it.

I have unplugged the 24 pin and 4 pin cables that were plugged into my motherboard and plugged them back in.

Ive taken out the battery on the motherboard to restart the CMOS (I think it's called that) and put it back in. Doesn't work.

I have tested the computer's power cable with my monitor and that turns it on. I've tested the wall socket with a lamp, and the lamp works.

Any help please?!

Here's my spec.

Gigabyte B75-MD3H
Intel Core i7 (3770) 3.5GHz X 4 (14GHz) L2 Cache 8MB
8 x USBS Ports Onboard Raid 0/ Raid 1/ Raid 0+1
5.20 Internal Card Reader & High Definition Audio Surround Sound
Network Fast Ethernet Gigabit Lan & Wireless Lan 802.11b/g/n
Ram 8GB DDR3 Kingston Hyper X
Display PCI Express NVIDIA Geforce GTX 660Ti 2048MB
Hard Drive 500GB SATA II
Windows 7 Home Premium 64bit
 

Answer:Computer doesn't turn on (a week after non use)

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I have a Dell Dimension 8400 with Windows XP Pro on it. It's only a year and a few months old.

Anyway, a few months ago, I turned on the computer and instead of loading properly, it beeped and nothing showed up on my computer screen. And all I could hear after the beeping was the fan, which I noticed to be abnormal since the machine makes its usual running sounds. So, I opened up the computer and saw that one of the metal strips that covers an unused drive space was loose, so I tightened it back into place, closed up the computer and when I turned it on, all was well.

Now, just a few days ago, the same thing happened except nothing I did could make my computer turn back on. I tightened the metal strips, drives, checked all plugs, etc only to find out that whenever I pressed the power button the green light goes on, the beeping happens, but the computer will not turn on and function. All I still hear is the fan on inside the computer.
Please help.
 

Answer:my computer beeps and doesn't turn on, help!

Does the beeping stop after a certain number of beeps each time? If so, count the beeps and refer to the online help available through the PC manufacturer. It's possible the movement when you opened it up caused the machine to work again and was not related to the metal strip. (possible). If you have more than one ram module, try each one separately. This may single out a bad one. If there is any way that you can borrow a friend's ram memory module(s) try different ram. Almost every time I've had the beeping problem, it has been ram related.
 

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Hello,
I have a Dell Inspiron 15-3521. 2 days ago, my laptop battery percentage dropped down to 0, and as you would expect, it shut down.  I then charged it overnight thinking it would be working fine the next morning,  but the system didn't even turn on to tell me if the battery was low. Please help ASAP, thank you.

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Hello friends,

My old computer (Intel Impression 440BX) was running Win98, I formatted and installed XP Professional. Now when I select shutdown, the computer no longer turns itself off - as it used to. I now get the "It is now safe to turn off your computer" screen and have to manually turn off the power to the Motherboard.

I didn't make any changes to BIOS (AWARD) and I looked around to see if XP changed something, but didn't notice anything. I am not that experienced with all the different BIOS settings.

Thanks for your help.
 

Answer:XP Doesn't turn power off my computer

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Hello,it's me again.And I have another problem.When I click on the start menu >> turn off computer and whether I click Restart,stand by of turn off,the computer doesn't wan to perform the action.I can't even log off.I heard that a program might be blocking the computer from turning off but I don't know which program it is.
Can you help me,please ?
 

Answer:Solved: My computer doesn't turn off

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Hi,

I have been searching everywhere for an answer to my problem and have yet to find something. What happens is, after using my computer for extended periods of time (6hrs+) if I for some reason, shut down the computer (Or say the power cord gets yanked out) it will simply not turn back on immediately.
I click the power button to turn it back on, and for a split second the fans, etc, spin and then just cut out and everything is dead. If I click the power button on a second time, nothing even starts to work for that split second; its just completely dead. Now, if I take the power cord out, wait 10 secs, and then put it back in and power it on, I get the same split second power up, and then it goes dead.
The only way I get it back on again, is to leave the power cord out, wait around 10-15 mins, reconnect the power cord, and it works perfectly.
This problem only seems to occur when the computer is "hot", like I said after being on for a fair while, and immediately turning it back on. If I go to use it in the morning after being off all night, I never get this.

The reasons I think it may be, is either a faulty power supply, faulty power switch, or maybe the motherboard? I don't really know (Although I don't think it is the motherboard as it was only replaced a while back because of a burn out :\).
I was reading somewhere about how dodgy soldering can produce different results if the computer is hot or cold because of expanding/contracting. Could this be a ... Read more

Answer:Computer doesn't turn on after extended use

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I currently have two monitors working in Dual, the main problem i have here is my Primary Monitor - Iiyama Vision Master Pro 21 working with an ATI Radeon X800XT.

I try to turn it on after it's been off over night, and after i push the power button, the Monitor seems to start, but then within 1 second of me turning it on, it would then suddenly cut out, and make this weird prickling noise just blow the vent at the back. This would sometimes happen three times before it would stop cutting out, and then would start working normally.

I haven't put any magnets to this Monitor or done any direct damage to it. I have it set at 70Hz with a 1600x1200 resolution. I wondered whether there could be a problem with my Power Cable, but i didn't want to touch it without getting verification from you.

Regards,
Peter

Answer:Computer Monitor sometimes doesn't turn on..

Does your monitor give any output when you turn it on, maybe it's a dodgy power cable or VGA cable?

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Hello Gurus - So - I built myself a computer about 6 months ago.  Core 2 Duo E6850 4 gigs ram etc etc.  Everything has been working fine until i came home from work today...and the thing just doesnt turn on.  I hit the power button, nothing happens.I changed outlets, and power cords and still nothing.I need help figuring out if it is the actual case button, the power supply, or something worse.Whenever the computer is plugged in, the green light on my mother board lights up, which leads me to believe the power supply is still pumping out some juice - and that the problem is with the case's "on" button.Does anyone have any solution to try and figure it out...without actually purchasing a new power supply or case?Thanks!

Answer:computer suddenly doesn't turn on

Borrow a known good PSU of the same or greater wattage and swap it in there to see if this is the issue.The MBoard light doesn't need a whole lot of juice so it basically tells you nothing.Were there any symptoms leading up to this problem ?Have you installed any new hardware recently ?Post back with your results and we'll go from there.

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My computer attempts to turn on, then like .3 seconds after I press the power button, it turns off. I opened the case to see what was the problem. The power supply does work, because it is showing lights before cutting itself off it seems.

So far I have a list of good parts, and they are as follows:
RAM
Graphics Card
Power Supply
CD/DVD Drive
Hard Drive
Heatsink/fan

I have bought a new motherboard and CPU recently.

They are: AMD FX-4100 Quad-core and ASRock 970 Extreme 3.

Any suggestions as to what is wrong?

Thanks!

Answer:Computer Attempts to Turn On then Doesn't

A couple of things to start with:

You say "I have a list of good parts".

What makes you think they are good?

Do your fans start to move when you try to start?

Can you hear the hard drives try to spin when you try to start?

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The computer loads to the xp home logo, sounds like its gonna shut down, then starts all over again (reboots and continues this cycle)

It's running Windows XP Home.

It was just loaded with a bunch of Windows updates, probably a years worth I'd guess. Also, a virus scan was run and found a bunch of trojans, but this was h0ours before windows update and the computer shut down / restarted properly after the virus scan was done.

Or, in other words. The virus scsan ran, tried to remove a bunch of trojans (but I guess it didn't remove them properly because it keeps getting a bunch of messages that the Trojan horse is still on it). After that, the computer restarted properly. Then, Wijnodws UPdate went, installed a bunch of things, and now it wont start properly

Anyone have any ideas?
 

Answer:Computer doesn't turn on properly

O hyeah, Windows update installed 55 things
 

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I have a sony vaio desktop (PCV-RX830 in case you're wondering). I come back from 2 months of vacation to find that my parents took my computer to their workplace so they can use it. I see it working fine as it had two months ago. So we open it up, blow the inside of dust and I bring it back to my home. As soon as I start it up at home the blue ON light comes on and so do the whirling of the fans. But then after a second or so of booting up, all the noise inside the computer slowly dies down and nothing shows up on the monitor. The blue light remains but it's obvious it's not on. After a day trying to figure out what's wrong with it, I take it to Best Buy (cuz i bought it there) and have their people look at it (the biggest mistake i've ever made).They tell me that my primary harddrive has bad sectors and my third memory card went bad (I had 3 memory cards totaling 1g).I give them the benefit of the doubt and buy a new harddrive and memory stick. I install all of these into the computer myself since I don't want to pay extra and since I've already installed harddrives and memory sticks by myself before. I start up the computer and the same exact problem occurs. Even with a new harddrive the computer just doesn't boot. Nothing shows on the screen at all. All i'm left with is the dying noise of computer parts inside the tower. Please someone tell me what's wrong and what I can do about it.

Answer:Computer doesn't turn on anymore

QuoteI have a sony vaio desktop (PCV-RX830 in case you're wondering). As soon as I start it up at home the blue ON light comes on and so do the whirling of the fans. But then after a second or so of booting up, all the noise inside the computer slowly dies down and nothing shows up on the monitor. The blue light remains but it's obvious it's not on. I buy a new harddrive and memory stick. I install all of these into the computer myself since I've already installed harddrives and memory sticks by myself before. I start up the computer and the same exact problem occurs. Even with a new harddrive the computer just doesn't boot. Nothing shows on the screen at all. All i'm left with is the dying noise of computer parts inside the tower. 1)Do you hear beeps?2)What do they sound like?3)Specs for PC?

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Ok so my Lenovo Y510p screen refuses to turn on for hours when you restart it. When it does eventually turn on it runs like normal and runs very well. This only started happening when I installed windows 10.I tried: static resetFn+all of the F keys.Nothing. You can hear the fans running and everything. Any suggestions? As of now I've had it on for hours and it still hasn't came on
 
 
Mod's Edit: System model added to Subject line to improve visibility / clarity

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It turns on but the screen doesnt. The backlight is not broken because when it does turn on (randomly) everything works. Pushing down on the screen works but only as long as I'm holding it really. So I've come to the conclusion that the lcd cable has loosened somehow or there is a problem with the program that starts the computer. I've only had the laptop for about 4 months and the problems started about 1 month after buying it.
And when it does turn on it randomly freezes I have no clue why I'm no computer expert and I've only built a single computer.

I have already ran defrag and c disk cleanup, ran Norton and turned off unnecessary programs. The vents are not obstructed and I've already done what I think is a hard reset. Removing the battery, holding the power button for 45 seconds and then putting everything back together.

I'm about to throw the thing out the window and I cannot afford any parts to replace or take it to any computer repair shop. I only make about 150 a week.
 

Answer:Asus G73 laptop screen doesn't turn on and randomly freezes when it does

Was able to turn it on

Its in safe mode right now and I'm checking the event log 8,894 errors. They are 7023, 7031, 7034, 10010, 14329, 6008, 55, and 8003. The 7000 event ID all occur when im trying to turn my laptop on.
 

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is there some Fn key that will do this or a program? thx

Answer:t61 is there a button or progam to turn off the screen? power man. doesn't work

If you disable system entering suspend or hibernate, you can power off screen by closing the lid. Windows power manager should do it on a timed basis, but an active task will usually prevent it. As for a key, there probably is one, but I've never looked into it. Maybe someone else can give you a better answer.





ThinkPad W-510 i7-820QM(1.73-3.06GHz) Quad Core... ThinkPad T500, T9900, 8gb SSD...FrankNpad T-60p/61p (X9000 2.8ghz) 8gb SSD ips FlexView...ThinkPad T-61p (T9300 2.5ghz) 8gb ram...Thinkpad X-61 Tablet 8gb ram.

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When I open up my computer and try to login, both the keyboard and touchpad no longer works.  The only thing I can do is touch the screen and hope the on-screen keyboard pops up.  but I can't use the actual physical keyboard or touchpad.  They seem disabled. I don't even see the mouse pointer arrow or icon on the login screen at all  when I try to move my hand around the touchpad now it takes me a couple tries to login abd only after I  login, the keyboard & touchpad work again Im using HP Spectre x360. I think this started happening after the last major auto update  (Also now the computer doesn't go to sleep when I close the lid,  and after a while the computer gave an alert message that the battery was low since it never went to sleep.  After this last update, the low battery alert message is now pink instead of blue )

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Hi,
i pluged in my hard disk to another computer to format it. Now when i was finished i pluged my hard disk back to my pc. Now when i turn on computer monitor just go to sleep and nothing happends. I dont have any OS right now and i cant modify anything. Maybe i did something with my hard disk wrong i dont know. please help me.
 

Answer:My computer monitor doesn't come on when i turn my computer on

Why did you take it to a different computer to format?
Do you have the o/s cd in the drive to boot from?
 

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when i turn the power switch on the lights come on on the motherboard. the computer will start, harddisk runs and fans are spinning. i dont have a speaker for beep noises. screen is just blank, no signal. tried setting the graphics card in another computer where it runs fine. tried 2 different harddisks, tried powering up without harddisks, tried reseating components and removing ram sticks to check. nothing works. i can afford a new mobo or cpu, but how do i know which of them is faulty? i suspect the motherboard. also tried setting the graphics card in another slot, no luck. normally on my other computer when i turn it on, the graphic card fan will run hard for a few secs then settle once entering bios or post or what it is u call it, when setting it in the bad computer it just runs hard until i shut it off again. any help is greatly appreciated. thanks.
 

Answer:computer runs but black screen

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Hello. New here and have a question. When I boot up my computer, it spins the hard drive and boots Windows. Sometimes, it goes click-click and the HD access light stays on. When it is loading, or when I am trying to do something, it goes black. Someone please help!
 

Answer:Help! Computer runs but goes to black screen!

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Just a little backround on my laptop.  It's about six years old, and has 8 gig of RAM and optional ATI Radeon graphics.  It has been used heavily as I do electronic medical records with it as well as personal stuff.  It's not turned off very often; I just keep it in hibernation. One day a couple of weeks ago I had several tabs open in Chrome, one of them being SiriusXM streaming.  My back was turned as I was with a patient and all of a sudden I heard a buzz coming from the audio that lasted a few seconds, then no sound.  When I finally looked at the computer, the screen was black, but everything else was running (leds, hard drive, fan, etc). I pulled the AC power and the battery, restarted Windows in safe mode, and had a display.  I then deleted the video drivers for ATI and Intel, then restarted the computer.  It came back with the screen looking fairly normal to before it went belly up, and also had sound.  Windows then automatically reloaded the video drivers (during which time a box came up and told me the ATI driver didn't exist) and then prompted me to restart.  I did, and sound, leds, hard drive, everything came up except black screen again. Well, I repeated this several times, even went and downloaded the ATI driver off of the site, with the same result.  At that point I decided to use the computer as it was after the first restart and select "restart later" so it wouldn't go back to the black screen.  I... Read more

Answer:Computer runs, screen is black.

Hi, I'm not sure what the problem might be, it might help to plug in a VGA or HDMI display to see if you can get a display there to help diagnose it?  You might also check if a BIOS firmware upgrade is available also.

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Hi,

I replaced my old video card today and when I tried to boot up my computer it will not even power up. There is green blinking light on my mobo, but the computer will not boot at all. I put my old video card back in but the computer still does not power up. I checked all the wiring and everything is in place. How can I fix this???

Thanks everyone
 

Answer:Computer doesn't turn on after new video card

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Problem 1:
Forgive my wording if it sounds confusing. On one day I can use my desktop all day with no problems. However, the next day I can't turn on my computer. I can hear fan noises inside my computer and the power button lights up, but the monitor says that there is no signal and promptly turns black. One thing that may be important is that when I attempt to turn on my computer, when the fan is louder then my computer turns on with no problems. On the other hand when the fan is quieter, the computer does not turn on (the monitor receives no signal). The day after, I then turn on my computer and it works completely fine. So currently I tend to use my computer every other day and my computer turns on every other day with no problems (which has been inconvenient).

Problem 2:
For a few months, I have been playing Overwatch (a video game) on fullscreen (19201080) with no problems. However, recently my computer crashes when I play and I cannot turn on my PC right afterwards. On the other hand, if I play Overwatch in windowed mode in 1366768 resolution there are no computer crashes.

Conclusion:
I am not sure which hardware part is the problem and I am wondering what actions I should take to fix my computer. Thanks in advance!
 

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Can somone please help I have a huge problem.

Firstly when I put my computer on everything was working fine but nothing came up on my screen it just said no signal, I checked all the wires and everything was fine, so was my pc it seemed to work fine it was just the screen that wasn't then i looked at the back of the PC and i saw this red switch which was on 230 then i changed it to 115 and I heard a sound so I changed it back to 230 and now my computer dosent even turn on SOMEBODY HELP PLEASE!!!! also does this mean all my files are safe or are they all gone

Answer:SOMEBODY HELP!! I flicked this red switch now my computer doesn't turn on!!!!!

Where are you located, Europe or USA?

The 230 is usually non-USA. If you powered your system at 115 and you had a 230 input power, you likely blew your PSU (at best) You'll need to get a new one.

NEVER change this PSU switch if it worked before.

If you ARE USA, and you buy a new PSU, the setting should already be set to 115.

If you are non-USA, a new PSU should already be set to whatever your country uses.

Good luck.

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It goes through the motions then returns to desktop of whoever is logged in.
Is there a setting I have missed somewhere? as I have been all through the main settings.

Answer:Why doesn't the power/shutdown turn the computer off?

We're going to need a bit more information to be able to assist with this particular issue. Please register for an account, then return to this topic and give us the following information:
1. What is the make and model of your computer. Manufacturer name? Model Number?
2. Was this an upgrade to Windows 10? If So, what OS was it upgraded from?
3. Do you have any 3rd party Antivirus or Firewalls installed? If so , what are they?
4. Is this an OS that is NOT Windows 10. If so, then please provide the name and version number of your OS.
Once we have that information, I can rule out if it is a hardware issue or configuration issue. It sounds like a hardware issue, but it could be a software conflict.

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Hello.

I have a strange problem and i'm not even completely sure it's hardware related.

I formatted my PC's hard drive and installed XP. I didn't have any troubles with that and it wasn't unusual in any way. Unfortunatelly after that my PC has problems turning on. It restarted a few times during system instalation, updating and installing other programs (which is normal), but after I turned it off for the night, the START button doesn't seem to work properly. For the first and second time I've managed to turn it on eventually (I've unplugged the power cord and plugged it again, I played with the ON/OFF switch, I waited). But the problem didn't vanish. Now it doesn't respond at all. Maybe it will turn on after a while (like two last times), but I'd prefer the problem to disappear completely.

I found this article - http://www.hardwaresecrets.com/article/547 - but I really would like to avoid opening the guts of my PC. Is it possible that the problem is software related? It appeared only AFTER the format and has never existed before.
 

Answer:Solved: Computer doesn't turn on after format

Cable problem.

Solved.
 

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i was working in Maya..actually just browsing.i havent even created anything.the scene was empty.and i just started to make a basic model the computer suddenly turned off.then in 2 seconds turned on again (almost) but the monitor wasnt showing anything.hdd light was off (everytime my computer starts normally it's ON)..cpu fan was rotating slowly.and the diagnostic lights (i guess) were on on the motherboard..i was afraid that cpu may get overheated (because the fan was rotating very slowly) i cut off the electricity.then started the comp again..this time..the fan didin't even start rotating (just showed little signs that it kind of wants to start rotating)..2 seconds that last..then it turned off again..after that it's on for a second then off for another..it just turns on and off if i dont cut the electricity
and the thing that.if i wait some time.then turn on the comp it goes a little long and wants to start ( maybe for 4-5 seconds) and then the same thing..so i thought it might a overheating problem (though i haven't done anything that could cause that) and disconnected the graphics card, the drives and the hdds..didn't help

havent' had these kind of problems before.the comp is in good conditions.bought in 2009

the specs are:

Quad Core 2.66
4GB RAM
GTX 560Ti
Windows 7
580w power supply

and there's a ups..600v/s i think..it's old..dunno if this can cause the problem.just additioanl info

this is urgent..please help with anything u can.thank u very much

Answer:Computer turned off suddenly, now doesn't turn on

I hate to guess, but my initial reaction is Power Supply. But the UPS could be a complicating factor.

First, I would remove the UPS from the system and test.

Then, try another power supply in your system or try your power supply in another system. Do you have access to another PS you could test with?

Another thing you can try is to disconnect all external devices, all drives, and any other power draws that you can and see if the system will boot with just basic components: PS, MB/CPU, RAM, Graphics.

If we can eliminate the power supply as the cause (prove that it is good) then we can move on to the other potential causes.

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When I push my T400's power button, the laptop no longer goes into hibernation. I have already tried the following:-Checking the power button setting in Windows (it's set to hibernate)-Holding down the button for a while (if I keep holding it down, the laptop does a hard shut down) What can I do to get the power button to work again? I've also tried using the dock's button; the same problem occurs with that button. What can I do to make the button work? Extra Context:-Windows 7 32-bit Edition-No obvious power-related event log warnings or errors





Lenovo Stuff: ThinkPad T400 (2764CTO) + Advanced Dock, ThinkPad T440p + Ultra Dock, assorted batteries, screws, and nubs

Answer:Power Button Doesn't Turn Off Computer

Does Fn+F12 still work?

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Hello... let me state the problem.

Problem: Computer shuts down randomly. I press the power switch, but it does not turn the computer on. I have to wait a while and press power switch, and it turns on, or I switch the voltage switch (red switch) on the back of the PSU a few times, press power, switch voltage switch back to 110V and then power switch and it turns on normally. (Probably not good for it) It then runs for like 1 hour --> 1 day and turns off randomly again, where i must repeat.


Reason?: I use to never leave my computer on for longer than a day. I never downloaded anything large for it to be left on overnight. During chirstmas I got a Dual Layer DVD-Burner and installed that. I have been leaving my computer on for weeks at a time downloading large files now. Everything was fine for about 3 weeks. Near the end of Janurary it first happened. I didn't think much about it, just turned it back on and it worked fine. About 2 weeks after that it occured again: Now it happens pretty much every day with the added bonus of the power switch not responding for about 1 --> 5 mins.


Possible Problem: The thing I find most insteresting is the fact that after it shut's down, it will not start up for about 1 mins (power switch doesn't respond for a little bit). I can not tell if it is because:
1) I started leaving my computer on for weeks at a time and now Mobo is burning out or PSU?
2) Because I installed the Dual Layer DVD-Burner, and ... Read more

Answer:Computer doesn't turn on for a few seconds? PSU Problem?

Sounds like it could be the PSU. I had similar problems in getting the bugger to start up and swapping out the PSU seemed to fix it. I've also had problems with the powerup button getting stuck and causing similar symptoms, but with it shutting down my guess would be PSU. Good luck!
 

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hey,
When i went to bed my computer was working fine. but when i woke up (8 hours later or so), When i press the power button nothing happens, not even a choke to try and start up. The weid thing is that when i turn on the rear power switch, the motherboard green LED is on. So im not sure if this is consistent with PSU failure? I would have that PSU failure for sure but now im not certain.
i have tried:
Using a known good power socket.
switching the power and reset buttons on the motherboard to see if it was the siwtch
Short circuiting the on switch on the motherboard.
When i unplug the motherboard power cable from PSU, the green LED turns off, when i plug it back in it turns back on.

Does anyone know if its a PSU problem or somethign easier? Because it's really throwing me off. I think i have to be getting power, since the mobo LED is on.
Thanks
Andrew
 

Answer:Computer doesn't turn on, but mobo LED light on

Hello and welcome to techspot.

I'm not good at all when it comes to this case, but coincidentally, i have the same issue last year.So i decided to write some possible reasons :
1. PSU failure (+12V A rail is too low)
2. Capacitors leaked
3. Heatsink and thermal gel not installed properly
4. Few drives problem such as HDD or optical drive
5. short circuited cables inside the case.

So far, when this problem happens to me, i could not turn on the PC whenever the HDD is attached. But when i unattach it, the computer would on.
Or another issue, i have a fan in the case which i have not installed yet. Accidentally, when i move it with a pincer to the correct position, the metal parts of the fan get in contact with the CPU case. Straight after that my computer turned off, BUT the CPU LED is on.

Well, let's find out more about your computer, can you give your system specs here?
 

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