PC randomly restarts (yes, one of these questions again)

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ffrg

Honorable
Nov 20, 2013
6
0
10,510
Hello all,

I know you guys must have read this question million times already, I went through many posts on here but yet to find a solution to my problem.

About a year and a half ago, I build my own PC and recently, it started to randomly restart. I didn't make any HW changes.

I noticed, that if I run the PC in the morning, it lasts about 3 hours, then restarts. After that, about an hour. After that, it is a matter of minutes. The restart comes in a shorter time each time.

My specs:
Windows 7 Ultimate
Gigabyte P67A D3 B3
Intel Core i5 2400
8GB of RAM (2x 4GB)
GeForce GTX 560
Fortron Blue Storm II 500W

No overclocking.

I formatted the main disk and installed a new Windows.
I run several mem tests, nothing found.
Temps are OK.
I did a CPU stress test, everything OK.
I did a GPU stress test, everything OK.
There is nothing burned on my motherboard and no component is hot in the case.

I'm running out of possible solutions. :(

Any help?

Thanks a lot and sorry for my basic English.
 
Solution
prit87
your psu is the culprit and the wattage wise its not enough the gtx 560 needs a 42 amp @ 12+ volt rail so get a good 600 - 650 watt of psu from seasonic or xfx which have at least 42 or higher amps.....
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Eduello

Eduello

Judicious
Mar 2, 2014
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32,960


Agreed, the PSU seems to be the culprit, but a quality 500W+ unit would do, no need for 600W.
 
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F

ffrg

Honorable
Nov 20, 2013
6
0
10,510
That was my first guess, also because I have that PSU since 2007. But there is no crashing during gaming (I can play Skyrim for hours on maxed settings).

I got an idea that seemed silly to me at first - I tried to disconnect the ethernet cable from my PC. It's already around 90 minutes, I ran GPU, CPU stress test, still no restarts.

Could that be the culprit? I don't use external card for ethernet input, I use the one on my motherboard.
 
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F

ffrg

Honorable
Nov 20, 2013
6
0
10,510
Upvote 0 Downvote
F

ffrg

Honorable
Nov 20, 2013
6
0
10,510


I don't have the readings in my BIOS. Is there other way to determine them?

Yes, I disabled the restart on failure, so far so good...
 
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