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Windows 7: PC powers off after several minutes, not power supply issue.

17 Feb 2015   #1
andreh

Windows 7 64-bit
 
 
PC powers off after several minutes, not power supply issue.

Hi there, sorry if this or a similar issue has been posted before. Several hours of googling didn't help me solve this issue.

I built my computer last year and recently it has been powering off instantly between displaying the BIOS info and displaying the windows booting animation. I have noticed that if I leave it turned off for several days I can get six or seven hours of uninterrupted usage before the computer powers off. However if I try to boot it up a few minutes after it has just powered off, it shuts down almost instantly. I thought it was a power supply issue and so I just replaced my 450w supply with a 650w one. I got about two hours of good use from the computer with no problems, restarted it, and it powered off during the windows animation. I'm totally at a loss. The computer shuts off when I navigate to BIOS setup and just leave the BIOS screen up doing nothing, and also shuts down in safe mode. This is super frustrating and I've got no idea what to do next. Thanks in advance for your help


My System SpecsSystem Spec
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17 Feb 2015   #2
Sir George

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by andreh View Post
Hi there, sorry if this or a similar issue has been posted before. Several hours of googling didn't help me solve this issue.

I built my computer last year and recently it has been powering off instantly between displaying the BIOS info and displaying the windows booting animation. I have noticed that if I leave it turned off for several days I can get six or seven hours of uninterrupted usage before the computer powers off. However if I try to boot it up a few minutes after it has just powered off, it shuts down almost instantly. I thought it was a power supply issue and so I just replaced my 450w supply with a 650w one. I got about two hours of good use from the computer with no problems, restarted it, and it powered off during the windows animation. I'm totally at a loss. The computer shuts off when I navigate to BIOS setup and just leave the BIOS screen up doing nothing, and also shuts down in safe mode. This is super frustrating and I've got no idea what to do next. Thanks in advance for your help
It may be a memory module problem. Try playing around with the memory chips/slots.
My System SpecsSystem Spec
17 Feb 2015   #3
andreh

Windows 7 64-bit
 
 

Thanks for getting back to me
I fiddled around with my RAM for a while, I only have one 8gb stick but putting it in different slots didn't seem to do anything. I have no other DDR3 laying around sadly. However while fiddling around in there I realized the small plastic lever which buckles the heatsink down onto the CPU had not been flipped over. So I suppose cpu overheating may have been the culprit, I have turned the computer on and am on the BIOS now, it has been stable for about five minutes and still is. I'll let you know more once I reconnect the hard drives and try to boot into windows. Thanks for your reply
My System SpecsSystem Spec
.

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 PC powers off after several minutes, not power supply issue.




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