Windows 7: Computer randomly restarts (common problem?)

Hi all,

My computer has been randomly restarting for the past 6 or so months but has recently gotten worse, around two to three times an hour. I have set the system to NOT reboot automatically after system failure, and to write debugging information as a Minidump file, but the computer restarts nonetheless and does not produce any Minidump files.

I have gone through two power supplies trying to solve this: initially I had a Coolermaster eXtreme Power 500W power supply, which I replaced with an Antec Earthwatts 650W power supply thinking that it might be a PSU issue.

My computer is currently on a brand new hard drive as of last night, with a fresh copy of Windows 7 Ultimate 64 bit installed. I updated the motherboard BIOS to the latest version, and I think the drivers are up to date.

Event Viewer shows Event ID 41, source Kernel Power, with a BugcheckCode 0, SleepInProgress false, and PowerButtonTimestamp 0.

Windows Memory Diagnostic showed no errors.

I'm at a loss and would appreciate any help. Thanks!

System Specs:
Operating System: Windows 7 Ultimate 64 bit
Processor: Intel Core i5 750
Motherboard: Intel Desktop Board DP55WB
Graphics Card: Radeon XFX HD5750 1GB
Memory: DDR3 4GB PC1333MHz (don't know manufacturer)
Hard Drive: Western Digital Caviar Black 1TB
Power Supply: Antec Earthwatts 650W

No DMP files included in upload try this method.




To enable us to assist you with your computer's BSOD symptoms, upload the contents of your "\Windows\Minidump" folder.

The procedure:

* Copy the contents of \Windows\Minidump to another (temporary) location somewhere on your machine.
* Zip up the copy.
* Attach the ZIP archive to your post using the "paperclip" (file attachments) button.



To ensure minidumps are enabled:

Go to Start, in the Search Box type: sysdm.cpl, press Enter.
Under the Advanced tab, click on the Startup and Recovery Settings... button.
Ensure that Automatically restart is unchecked.
Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box (the 256kb varies).
Ensure that the Small Dump Directory is listed as %systemroot%\Minidump.
OK your way out.
Reboot if changes have been made.

I have no Minidump folder.

Automatic restart is unchecked, Small memory dump (256 kB) is checked, Small Dump Directory is %systemroot%/Minidump.

Try searching for *.dmp and looking in c:\windows.

Nothing shows up when I search for *.dmp.

Tonight was probably the longest I've gone without a crash, about an hour and a half to two hours.

Thanks again for the help!

Second bump. I've run all three Prime95 stress tests for 5+ hours and the computer was fine.