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computer shutdown, doesn't turn on right away when it does turn on its black

Question: computer shutdown, doesn't turn on right away when it does turn on its black

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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Preferred Solution: computer shutdown, doesn't turn on right away when it does turn on its black

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 (This link will automatically start a download of Reimage that you can save to your computer.)

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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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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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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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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.

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I just finished building a PC, installed windows 10 and updated all drivers and BIOS from Asus website.
When I turn off the PC, windows shuts down fine, but the computer stays on with a black screen and all the fans, lights, HDD, etc still on. I have to turn it off with the button.

Here's all I've tried so far:

Tried a clean boot, nothing.
Unchecked all the devices that had "allow this device to wake up computer" and nothing.
Hibernate is disabled, so fast startup is also off.
No relevant setting in BIOS that I can see.
Cleared CMOS.

What could be happening?


I5 6500
Kingston 16GB RAM 2400
Asus Sabertooth Z170 S
Kingston 240 GB SSD
Corsair CX450M PSU
Sound Blaster Z
Asus Ac-56 WIFI Card

Answer:PC doesn't turn off after windows shutdown

luneki said:

I just finished building a PC, installed windows 10 and updated all drivers and BIOS from Asus website.
When I turn off the PC, windows shuts down fine, but the computer stays on with a black screen and all the fans, lights, HDD, etc still on. I have to turn it off with the button.

Here's all I've tried so far:

Tried a clean boot, nothing.
Unchecked all the devices that had "allow this device to wake up computer" and nothing.
Hibernate is disabled, so fast startup is also off.
No relevant setting in BIOS that I can see.
Cleared CMOS.

What could be happening?


I5 6500
Kingston 16GB RAM 2400
Asus Sabertooth Z170 S
Kingston 240 GB SSD
Corsair CX450M PSU
Sound Blaster Z
Asus Ac-56 WIFI Card

Looks to be the same as this:

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Been having shutdown issues for the last several weeks following some issues i was having with an SSD drive and after a few hours of some hard soul serching in safe mode boots, i figured out that its an Nvidia driver that stops the machine from powering down after i hit the shutdown on Windows 7, i've tried reinstalling old drivers as well as the latest ones but i still get the same issue, it shuts down and powers off just fine NO PROBLEM!!! when i uninstall the nvidia drivers, but the second i load them back into windows i get the same problem again, if anyone has any thoughts or solutions i would really apreciate it, i've been trying to sort this bloody mess out for 2 weeks or more, and finally got it pined to the nvidia drivers.

Spec is : Phenom II X6 1080XT / 8GB DDR3 1333 / 2 EVGA GTX 560 Ti's in SLi mode/ 1TB 7200RPM HDD / ASUS M4N75TD Motherboard / BFG 1000WATT PSU / Using Antec DF-85 case
I've done bios settings and cleared the bios completely, nothing is overclocked, everything is at factory defualts, i've tried updating the bios , and i've also disabled the SLI mode and nothing effected it, and also done several install of windows. One last thing, it shurts down and turns off perfectly fine in safe mode.

any help pls would be apreciated

PS. The IEE host bus controller in device manager tweak doesn't work, it doesn't matter if the power saving box is checked or not.

Answer:Windows 7 shutdown Doesn't turn Off PC

Did you ever check for firmware updates for your ssd?

Many of them have functionality updates for their firmware.

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Hello everyone,It seems that my XPS 9550 has a motherboard issue. I have got this laptop for several months before this problem happen. At first, the power button needs to pressed twice before the computer can turn on. Pressing it once will only cause the button to light up and fans to start spinning for only seconds. Then, after about a week, the problem got worse. I have to static discharge the BIOS and charge the computer for about 12 to 24 hours to get it working again. The light indicator did show that the CMOS battery is dead several times, and I had the CMOS battery replaced, but still no luck. I have run the diagnostics many times, but everything seems perfect. And I can get into the OS once the computer powers post points out a similar problem, but I think it has nothing to do with the battery or most of the motherboard components.Does anyone have encountered this before? Any advice will be appreciated.- Peter

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Hello everyone ,so I brought my Acer laptop like few months ago ,works like a beast ,and few days ago I turned it off safely, and put on charge and next day morning doesn't work every time I press the power button it doesn't start at all no sound nothing showing only the power of the battery when I put the charger on . So I wanna know any solution out there ,because it's weird doesn't start at all but the battery light shows on . I love this laptop but the power button is annoying because it's all in one place which is the keyboard

Answer:Aspire v17 Nitro black VN7 (doesn't turn on )

Hello, As far as I remember, you should have an internal battery so have you tried this: 1. Shut down your laptop2. Disconnect the AC adapter3. Wait few minutes4. Follow this procedureNote: The battery reset pinhole is marked with this symbol on the bottom of the laptop.

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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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Hi, everyone! I've decided to ask there before writing directly to Acer through Customer Self Service (moreover, my warranty SNID is assigned to the store where I've bought my laptop). I've noticed that my laptop (Acer V17 Black Edition - VN7-792G: Win10, i7-6700HQ, 16GB of RAM, SSD 256 GB, 1 TB HDD, GTX 960M) doesn't turn off. At least when I really want to turn it off. I've search the web, but I didn't see similar issue. When I Start > Shut down and then, let's say - 12 hour later, want to turn it on and then when I click Ctrl+Shift+Esc and go to Performance tab, my CPU running time still counts (I'm not sure if through the period of PC being turned off or it just keeps counting). I think it shouldn't look like that, I mean, why it won't turn off completely and then turn on again and counts from 0? Furthermore, when I click Start > Restart, CPU's running time in Performance tab starts counting from 0. I don't know why it's like that. Looking forward to your answers.Have a nice day!

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If I unset "Allow the computer to turn off this device to save power" on the Power Management tab of my USB Root Hub properties, then when I attempt to restart my computer from the Start Menu, Windows shuts down but the computer itself keeps running,
i.e. the power light stays lit and the fan continues to run. In order to actually shutdown, I have to press the power button for a few seconds. Upon reboot, there is no indication of a failed shutdown from Windows. However, I am able to shutdown from the Start
Menu without problem.
Is this really the intent of not allowing the computer to turn off a device connected to a USB port, i.e. you can shutdown but you can't restart? Seems a bit arbitrary to me.
Windows 7 Home Premium 64-bit Service Pack 1
Acer Aspire 5560
AMD A6-3420M APU with Radeon HD Graphics 1.50 GHz
8.00 GB
All device drivers and the BIOS are up-to-date.

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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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Hey guys, little help here please.
Sometimes when I try to turn on IS it tries to turn On but everything greys out and nothing happens. Last time I tried it was about 4 hrs ago and since then its been hung up there. I can't open IS from settings now, Loading... shows up and it crashes after ~20sec. I can't turn off wifi because it becomes 'frozen' and when I press Back/Start button nothing happens but if I long press back button it show my active window is Start screen even though I am still in Wifi settings. After I release button wifi closes and end up in start screen.
I know if I soft reset everything comes back to normal. 99% I can even turn on IS. But why does this happen and how do you solve this problem (I know in the past some ppl used to have it)

Answer:Internet sharing doesn't turn on + cant turn off wifi

After a bit of searching this was the only answer I could find.
Remove/uninstall your nokia acount, install access will get your internet sharing.
Not sure if that will help you or not but it's worth a shot.

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Hello Folks,

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

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

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

I'm not sure what... Read more

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

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

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Relevance 80.36%

This problem started recently. Tried every fix I could find, but no luck. Any help would be appreciated.

Thank you

Answer:Computer keeps restarting after shutdown. Can not turn off

Try resetting BIOS to defaults after taking note of SATA controller setting. Clear CMOS - 3 Ways to Clear the CMOS - Reset BIOS

Try booting into a Boot Disk like Peppermint3 - Create Live CD/DVD/USB To Use For Emergency Backup - Windows 7 Forums to see if the PC will shut down from that when Win7 isn't involved.

Then try again with the HD unplugged to cut it out entirely.

If this occurs with the boot disk then you know it isn't OS or HD related, but is in the mobo.

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Relevance 80.36%

So I've been having this problem with my computer for a couple of weeks now.
After I choose to shutdown my computer , windows does it as usual and is very quick at it since I have an SSD, however after the shutdown screen disappears and my monitor turns off, the fans are still spinning and the motherboard makes some noises (not beeping) as if it's going to power on or off.
It eventually shuts down after 25 to 30 seconds which is weird in a way since everyone in the internet that had the same issue says that they have to hold the power button in order to turn the pc off since it won't by itself.
From the suggestions that I found in the internet I tried them all, updating my BIOS, leaving my computer unplugged for 2 hours and without the CMOS battery, installed the new Windows Creator Fall update today, updated all the drivers on my computer, ran CCleaner to fix registry errors but nothing fixed it for me.

My computer specs are the following :
CPU - Intel Core i5 7500
GPU - Asus Strix 1060
RAM - 12 GB DDR4
Motherboard - Asus Z170 Pro Gaming
PSU - Aerocool Strike-X 600W
Operating System - Windows 10 Pro 64 Bits

Also since this problem started happening, during the boot after windows has loaded and when it should show the login screen it turns off my monitor for 5 seconds but turns it right back on and it shows me the login screen as usual.

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Relevance 80.36%

It seems after I turn off my computer it likes to come back on after awhile. What sort of gremlin be this!?

I am running XP with a cable connection. Specs in signature.


Answer:Why Does My Computer Turn Back On After Shutdown?

Maybe in bios "power on xxxx" is on, be it LAN, keyboard etc..

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Relevance 79.54%

after normal shutdown my computer wont turn on until i remove power cable and press power button several times and then connect power cable and then it turns on

Answer:after normal shutdown computer wont turn on

sound like the power supply. Do you have another PS to try out.larry

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Relevance 79.54%

Hi.I have HP Pavillion 500-321 desktop, and I was wondering if it's possible to configure it so that I can turn the computer on remotely. I have succesfully configured it to wake it up from hibernation from my phone using wake on lan, and according to what I've gathered from some web searches this option (turning the PC on from a shutdown state) is possible in some MB.Just to clearify, I don't want to use wake on lan to wake it up from sleep or hibernation, I've already done that, I want to turn it on after it has been shutdown.I didn't find anything online that would tell me if this PC supports that option, so I'm asking here.Thanks in advance for your help.

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Relevance 79.54%

Last night I was playing starcraft 2. I was gonna do our family prayer so I plug pulled by taking the ethernet cable out of the back. It obviously disconnected me from the game. I did lose but it was better than leaving.

Im using the hp computer

I mustve shut down my computer. I forgot what happened because i took a sleeping pill.

I woke up this morning and it wont turn on. It does turn on the desktop does. The monitor doesnt do anything.

I tried a different monitor and it wont even boot the bios.

Im thinking thr 9500 gt graphics card died.

I reset the cmos as well and no luck.

Any ideas on what to troubleshoot?

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Relevance 79.13%

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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Relevance 79.13%

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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Relevance 79.13%

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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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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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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Relevance 79.13%

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?


Answer:Computer doesn't turn on

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Relevance 79.13%

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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Relevance 79.13%

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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Relevance 79.13%

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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Relevance 79.13%

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

- 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.
- 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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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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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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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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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
You can go here:
Scroll down to #76 and click on the word "Off" ,when the file download box opens up,click open.

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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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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.

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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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 ?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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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:

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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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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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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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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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Last night my computer was working perfectly fine with no indication of a problem. I come home the next day to turn it on, and of course nothing happens. It get's power but theres no picture on the monitor, it's black. So i try to turn the computer off and now it wont turn off, so i turned i turned off the powerstrip.

So i started with the most simple the cords and such, but everything is in the right place. I examined the monitor, but it was working fine. So i turned it back on to see if i could find something. In the long run i found nothing and i came to the conclusion it has it's probly my motherboard or something is wrong with my powersupply or even my cmos battery.

It's to tricky for me i just want to know where to start. The bios wont even load and i dont have spare parts laying around to test things out. the other thing is that power will only go on and not off. So i'm thinking about trying a new power supply first. If you have any idea's why i'm haveing this current problem please let me know.

Answer:When i turn my computer on, it's black

Powers on, but no display?

Any beeps when powering up?

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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 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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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:
Graphics Card
Power Supply
CD/DVD Drive
Hard Drive

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?


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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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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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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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):
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:
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!


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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.


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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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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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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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 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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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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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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My computer was dusty and may have been overheating. The fans were operating very loudly and i tried to turn on the screen but it is black. I cleaned the dust, and it still will not bring anything up on the screen. The fans work and i can hear the drives working. I tried changing the psu, cleaning the heatsink, and reseating everything. and removed the battery and put it back in to reset the bios. Nothing has worked so far. Any ideas will be greatly appreciated? Is it possible that i fried my motherboard or processor?

Answer:When I turn on my computer the screen is black

Tell me about your computer specs.

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So I got a hp pavilion tx510us entertainment notebook (runs Vista) and it seems to turn on (like all the lights are on and it makes noises) but the screen is black/blank or whatever. And its not just a blank screen because then I would have been able to put my pass in and then hear the turn on music and stuff. The thing is this happened before when it was still under warranty so I sent it in for free and they sent it back and it turned on and it still had on all my stuff so it must have been an easy enough solution, but when I chatted with them again I guess they don't keep track of what they did to it and they want me to send it in again and that would cost a large sum of money because its no longer under warranty. I did a hard reset a few times and took out the memory module and put it back in agian but still nothing. So, anyone have any ideas?

Answer:Computer seems to turn on but black screen

could b a back lite problem. try flashing lite on screen c if u c image. look hard hehe its faint. cheers

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Help my screen is stuck at the black loading screen with the HP logo !

Answer:When I go to turn on my computer it just sits at the black s...

Install new windows or any os by boot method.

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i have a inspirion 530 running vista when i turn computer on nothing but black screen any ideas

Answer:when i turn computer on nothing but black screen

Hi, could you please give some more details?Exactly when is your computer stopping? Do you still see the windows splash screen? Did you try safe mode?Do you have your vista DVD?Can you tell me what happened prior to this problem?

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My computer that i own isn't working properly. Firstly, its about 4-5 years old the power button gets stuck. I've been fiddling with it from the outside to come out all the way since if it goes in all the way and doesnt come out, it keeps restarting. When i wiggle it out, it starts and goes.

Now onto my problem now. When i start up my computer, a screen pops up allowing me to press F1 for setup. if i don't click F1, my computer goes to a black screen with a _ blinking in the top right. I can't do anything from that point and when i press keys too many times, it starts beeping after i hit any key again.

Anyways if you guys could help me, I would be very thankful!

Answer:Turn on my computer, black screen

sounds like it may be time for an upgrade

have you made any hardware changes or installed new device drivers?

from what you describe it seems like the system is having some issues booting the operating system from the hard drive, or there could be another hardware fault causing the hangup... like the memory or motherboard itself. if you are able to view the POST screen upon startup (which displays all of the system information and keys to access BIOS etc...) then you may be able to boot from a CD-ROM to run repairs or possibly boot into safe mode by repeatedly striking the F8 key after the POST screen appears.

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I turn on my computer, it begans to start up, and then the moniter just goes black and won't show the desktop or anything. It has done this every day for the past week or more and it's getting harder and harder to get onto the computer. What I do is turn the moniter on/off until it shows me a glimpse of the desktop, and then I mess with the screen saver power options (while it continues to keep going black and I have to turn the moniter on and off to get glimpes of what i'm doing), and eventually it just stops going black and works for the whole rest of the day until the next morning. I checked the FAQs and I heard people with the same situation mention video cards, but I'm not that great with computers and frankly I don't even know what that is. Help?

Answer:Why does my computer screen go black when I turn it on? Please help!

Some Specs please?

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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.

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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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.

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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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 - - 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.


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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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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 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 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
GTX 560Ti
Windows 7
580w power supply

and there's a ups..600v/s i'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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Recently my graphics card stuffed up, whenever I restarted my computer there would be three consecutive 'beeps' and the screen would stay black. I had it repaired and the person handing me back my hard drive (not the guy who repaired it) said that a new card was installed and it was apparently better for gaming.
I played games such as Age of Empires III and Civilization 4, however the games crashed occasionally. Age of Empires had never crashed when my old graphics card was installed (Nvidia Geforce graphics card) however my new card is an Asus, and during the play of civilization 4 the terrain details would disappear and black squares would emerge, then the whole screen goes into negative colours, bright yellows, purples and greens and then the computer shuts off restarts several times. This happened several times before and I would just restart. However it happened and my computer never started again. I cleaned out the iside of the hard drive and removed the dust.
The computer is 4 years old but it was well maintained, the power supply had been changed 2-3 years earlier, its brand is Hi-Tech.
I was wondering wether it is a graphics card issue, power supply issue or motherboard issue. Also I was wandering if replacing parts or buying a new hard drive is the best thing to do.

-Navneet (This occured Saturday July 17th 2010)

Answer:Computer crashed and doesn't turn on anymore

1st thing to do is get your hands on a DECENT power supply............. hi tech doesn't seem to be a mainstream "quality" brand
.....try antec,thermaltake,corsair to name a few pref' 600w+

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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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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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Hi, I set my computer to turn on at 2AM in Bios and it did work for a few years but as long as i installed windows 10 it doesn't work and i don't want to do this by task scheduler!!! What should i do? Thank you

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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.

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. . .


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My problem started back when i tried to install windows 7 on another disk, but it would not. Now i did this while my primary windows 7 hard drive was already istalled. after i gave up on trying to get windows to install onto this secondary hard drive, i rebooted the computer to find that my primary ssd would not load windows, and simple came to a black screen that said:

Remove disks or other media.
Press any key to restart

then i would press a key and it would say:

Reboot and select proper boot device
or insert boot media in selected boot device and press a key.

I have no recovery disk and most definitely do not understand what remove disks or other media means because I removed the windows installer dis and tried again but nothing happened. Please help, i am so confused, thankyou.

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i am using my laptop to report this.cause i can't use the one with the black screen.HELP!!!!!! when it first comes on its like it tries to start but just stays black.can it be fixed or do i have to buy a new screen?(i'm not sure if its called the screen or the monitor.i just know that when i turn the tower on,there is no picture .

Answer:black screen after i turn my tower to my other computer on.r

If you do not see the message "No Signal" on the monitor screen, very likely it's the monitor itself which is faulty or "dead".To check if it is indeed the monitor which needs replacing, connect it to your laptop if possible (there should be a VGA port on one side of your laptop so you can connect the monitor using the same VGA cable that connects monitor to your PC). If the monitor does not work on your laptop either, you need a new monitor.However, if your tower is not starting up it won't be a faulty monitor. There is something wrong inside the tower. Get someone to check it over, maybe needs a new PSU (Power Supply Unit) which fits inside the tower.Do not rush out to buy a new monitor if the tower is not starting up as the problem will be inside the tower.message edited by phil22

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My wifes laptop has developed a problem. On booting it starts with the "Windows starting " logo and then goes to a black screen and goes no further. It looks like the hard drive is still flashing away giving the impression that underneath it is still working but no picture. We want to use the repair disc that came with the laptop but because we cant see anything to shut the computer down via windows we are having to use the power button and therefore it prompts to start up again in safe mode because it was shut down unusually. We want to close it down completely and let the repair disc do its work on boot up from fresh start. Because we cant see anything on the screen to initiate shut down via windows is there another way of shutting down completely for the above reasons.
Also do I need to press f2 and tell the system boot from the cd (repair disc) or can I leave settings as is and it will do it automatically. Answers appreciated asap. Many thanks

Answer:How else do I turn off windows when computer has black screen.

On many laptops pressing and releasing the on/off button acts as a re-set but if you hold the power button down for 5 to 10 seconds the machine will turn off completely.

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Hi! I have a problem - my computer won't turn on and it shows a black screen all the time. It does not show any blinking lights at the front side, nothing. The only things that turns on when I press the power button are DVD RW and cooler. The computer is a little older, but still was functional until recently.Configuration:Zeus motherboard (I can't find the series number)Processor Intel Celeron e3300 2.5 GHzRAM 3x512 DDR2Graphic card Leadtek Winfast px9500gt 1 GB 128bit DDR2Please help!

Answer:Computer won't turn on, no lights, black screen

Do any sound come out of the on board tPC speaker?Do the keyboards lights come on? Can you use caps lock?The mouse? Does it light up? (If it is an optical mouse.)What fans come on?

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Nothing but black on screen.It beeps 4 times then pauses and beeps again twice. It is a dell 3000 on xp. Is it the mother board or hard drive.I reseated the ram, to no avail.

Answer:My screen went black, when i turn on the computer it beeps 4 then 2

can you boot into safemode ? 

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I've seen this problem posted a lot, but never with all of the same details as me.  I have Windows 8, but unsure if 64 or 32, I"m guessing 64.  I have a sealed battery, so I'm unable to remove the battery.   I rarely see my model number mentioned at all. I have turned the computer off and back on several times with peripherals removed.  Right now, it's on and open (so it's not asleep) and not plugged in.  All I can see and get is a black screen.  The caps light blinks now and again. I really would rather not reset and lose everthing, of course, who does?   What do I do?

Answer:Computer won't turn on--constant black screen

Hello @yecart,  Can you match the sequence of 'blinks' to those shown in the table below.    Hope this helps, for any further queries reply to the post and feel free to join us again !!  **Click the White Thumbs Up Button on the right to say Thanks**Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem. Thank You,GBL84I am not an HP Employee 

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I was playing a game on my PC while it was storming out and the power surged. Before I could unplug my pc the power came back on and my computer started back up. After starting back up it said installing update do not turn off the computer. I waited until it was done then it brought me to a black screen with a Windows logo and a circular loading bar. I waited somewhere between 5-10minutes before holding down the power button until it turned off. Upon turning the computer back on all the fans would work and everything it would show the blue screen that says to press esc then brings me to a black screen where it would have a _ mark in the top left and beep non stop. It isnt a long beep or anything its just multiple beeps non stop until I turn it off. I have tried taking out the ram and putting it back in but it just keeps beeping. I did a mem test and it showed that nothin was wrong with the ram. The beeps are high pitched and very fast. I have a video showing what happens if there is a way to post it.

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Hi! I have a problem - my computer won't turn on and it shows a black screen all the time. It does not show any blinking lights at the front side, nothing. The only things that turns on when I press the power button are DVD RW and cooler. The computer is a little older, but still was functional until recently.Configuration:Zeus motherboard (I can't find the series number)Processor Intel Celeron e3300 2.5 GHzRAM 3x512 DDR2Graphic card Leadtek Winfast px9500gt 1 GB 128bit DDR2Please help!

Answer:Computer won't turn on, no lights, black screen

Do any sound come out of the on board tPC speaker?Do the keyboards lights come on? Can you use caps lock?The mouse? Does it light up? (If it is an optical mouse.)What fans come on?

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Toshiba Satellite laptop, L55 series, running W10 Anniversary. I don't have this problem yet, but know from past experience that it can happen. I think I read somewhere that you can power up the dead machine by pressing one of the keys (I think it's the zero key) at the same time a pressing the power button. Is that correct? Thanks..Ed

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when i turn on my computer the LED light doesnt turn on so my webcam and my mic think my computer is off so they don't work.

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So I Was Letting My Friend Try Out My Computer, And He raged And smashed The Control tower. After I Kick Him Out Of My House, I turned On My PC to Be Sure its ok and now it won't turn on and does six beeps and no display at all. Here Are The Specs:
Optiplex 755
Windows 10 OS
Intel Chipset Q35 Family (Or Something Like That)
2 GB Ram
Please reply soon!!

Answer:Help, My Computer does Six Beeps When I Turn It on And it doesn't display anything on my monitor! What Do I Do?!

Video card is probably dislodged.  Open case and remove all cards then re seat ram.
Beep Codes
Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. For example, beep code 1-3-1 (one possible beep code) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered a memory problem.
Reseating the memory modules may correct the following beep code errors. If the problem persists, contact Dell for instructions on obtaining technical assistance.



1-3-1 through 2-4-4
Memory not being properly identified or used

Memory failure above address 0FFFFh



Microprocessor register failure

NVRAM read/write failure

ROM BIOS checksum failure

Programmable interval timer failure

DMA initialization failure

DMA page register read/write failure

Video Memory Test failure

1-3-1 through 2-4-4
Memory not being properly identified or used

Slave DMA register failure

Master DMA register failure

Master interrupt mask register failure

Slave interrupt mask register failure

Interrupt vector loading failure

Keyboard Controller Test failure

NVRAM power loss

Invalid NVRAM configuration

Video M... Read more

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I have a HP Pavilion 7960 that was used when new for a couple of months, and then stored for a year and a half or so. When I got it out again I have been unable to power it up. The monitor comes on and the little green light at the back of the CPU, but no anything else. I nee HELP....... please.

Answer:(Resolved) power switch doesn't turn on computer

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After a power outtage hit my house I tried to start my computer, but it didn't turn on. I opened the computer up thinking it was the power supply. I had the power supply replaced but that wasn't the issue. I also noticed the modem on the motherboard was lit up, so im guessing the motherboard is still ok. Sometimes when i kept turning off the power supply then back on, then try to start the computer i would see a flicker of the power light. Please i need advice on what could be wrong with the computer before i waste money to get it repaired when it could be a easy fix that I can do.

Answer:Computer doesn't turn on after a power outtage at my house.

did you try and clear cmos

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Hi guys. Big problem here. Yesterday my computer was working just fine. I shut it down without a problem, went to sleep.
Today I wake up, try to turn it on, and it doesn't make a sound. After trying to press the button a few more times, getting over the panic attack, having two shots, and a few advils, I decided to venture into my computer's depths.
The motherboard seems to be getting power, since two leds are turned on when I plug the PSU into the power source, yet when I press the power switch I can see no response. It's not that the PC doesn't boot. No fans start working. Nothing. It's dead.
I've checked the connections to no avail, and I'm thinking about the PSU and the power switch.

I wanted to know if it could be the PSU, since the motherboard does seem to get power and I changed it 3 - 4 months ago. It should be working fine.
What else could it be? The cables into the power switch seem to be glued to the connections so it's hard to check it with a multimeter.
I'd try another PSU, but a cheap PSU over here (Argentina) costs around 6 hours worth of work for me so I'd like to hear your opinion.

Answer:The computer doesn't turn on, but the motherboard receives energy

Sorry to make you repeat yourself but both the 20/24 pin power connector usually to the right of the cpu and the 4/6 pin power connector to the left of the cpu are definitely clicked in?

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Hi, everyone. Alexis is here.

CPU Inter Core i3 2310M @ 2.10GHz
Motherboard Lenovo emerald Lake
Generic PnP Monitor
Intel HD Graphics 3000 (lenovo)
1023 MB NVIDIA GeForce GT 525M (lenovo)
BIOS (brand lenovo)
Version 44CN28WW
Date 2/22/2011

I've installed clean windows 10 via usb, but laptop can't be turned off or restart. For example: after clicking Power->Restart, laptop closes apps, shows "Restarting your PC" and then just black screen and it still works I see it and hear.
Also I can't enter BIOS, I pressed F2, as I usually did, no reaction.
I saw, there are many posts with the same issue, people often say, that it's driver or hardware incompatability with windows 10. I tried many of the solutions, I saw.

There are some, that I can't perform:
First is to Disable internal graphics in BIOS, becase I can't enter BIOS.
Second is writen here:
1. uninstall intel management engine 11.x driver, and instal 9.x driver for windows 8. 2.turn of hybrid shut down as described here, or use ?powercfg -h off? cmd command. 3. go to device manager, navigate to Universal Serial Bus Controllers, select ?generic usb hub? and all other listed devices, open their properties, click on Power Management tab, and opt out ?allow this computer to turn off?.? press ok.CPU. Can't perform this method, because while installing Management Engine 9.5.24 I get message: "Your platform isn't supported".

Any advices on how to turn off laptop or restart as intended; How to e... Read more

Answer:After windows 10 installation computer doesn't turn off or restart

Laptop model is Lenovo-v570Sorry, forgot to send this info. Can't find the solution among all this information ;(Laptops-and-netbooks :: Lenovo-V-Series-laptops :: Lenovo-V570-Notebook - Lenovo Support

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I couldn't get my emachine w3052 with Xp to turn on (had this problem before and a thorough cleaning took care of it) so I cleaned it again. This time I made the mistake of taking the internal battery out (left out over 24 hours) and now when I put everything back together, I get that funny British siren sound so I unplugged it immediately. I tried plugging it in again and nothing, no sound, power, etc. I removed everything except for monitor and keyboard and still nothing. Is there any hope or does this mean my motherboard is fried? Thank you for any expert advise and help!!!!.

Answer:Computer doesn't turn on because of internal battery or motherboard?

Check your RAM and reseat.  The internal battery is to save your CMOS settings and all you did by removing it is to reset the setting back to factory.  Your computer will start on factory specs.  By "removed everything except for monitor and keyboard" did you mean that you took out the RAM and other internal parts or did you just take off the external stuff, ie the printer, scanner and the like?  If you took out the RAM and plugged it back it you should have gotten a beep code of 3 beeps.  If you didn't get any beep code, then your MB is toast.  If you took off the external stuff, that shouldn't have stopped your computer from starting.

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:knock: Today I came home from work and pressed the power button on the computer to which nothing happened. Not a slight power up and turn off, no lights fans, no sign of life. I used it this morning with no problems or indications of anything being wrong and turned it off when I was done, which it shut down properly. It never just turns off in the middle of gaming or anything. What could be the problem with it? Would that be the power supply? I have it plugged into a good surge protector and there was no lightning of weather effects today while I was gone. I turn it off every night before sleeping and when ever i'm done with it. Anyways, thats some usage of it. Its usually on for 6 hours a day or so and its rufly 3 weeks old. (just built). Thanks for any help you guys can give!!


Answer:Computer doesn't turn on when pressing power button

Jason - from what you describe (and assuming your power outlet is OK), your computer's power supply may have blown. Thankfully, it is an inexpensive part to replace!

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