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My computer restarts without any BSOD after exactly an hour?

Last response: in Windows 7
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June 8, 2011 2:54:24 PM

I am using Windows 7 and my computer restarts exactly after an hour. I have recently changed my PSU so its not a PSU problem and no component is over heating. It happens for a day then take a break for a week then starts happening again. Anyone know the solution?
a c 217 $ Windows 7
June 8, 2011 3:02:02 PM

Is anything showing up in the event viewer that might point towards why it's shutting down? Also, how is the power in your neighborhood? A brownout or power sag of only a few seconds is usually enough to switch off a computer.
June 8, 2011 3:09:05 PM

The logs show this error:
"The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
No there is no power problem in the neighborhood.
The system restarts after exactly 59 minutes and 60 seconds. It doesn't even delay for 1 second and this can only be done through software. I also haven't installed any new software or drivers.
a c 217 $ Windows 7
June 8, 2011 4:56:37 PM

That's odd. Have you checked the task scheduler? I know it's a long shot, but perhaps some software or malware scheduled a shutdown event.

Another thing to check would be your CPU & GPU temps. Now that summer is almost here, perhaps your computer is overheating.
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