Even more so if they 500 Watt PSU is the usual split rail. The hardest part for owners is it worked OK for a time and most owners are unaware that heat and stress ages the PSU as well as dust collects on the fins.
I'd re-think the usual areas and check if the PSU is a split rail design.
Bob
My windows 7 desktop pc recently conducted a system update. The next day without warning the p.c restarted itself, this continued to occur over the next couple of days with the system running from anywhere between a few minutes to a few hours before suddenly restarting. Eventually I tired restarting in safe mode, while loading the drivers the system froze on classpnp.sys. Thinking this was a driver error the next time I rebooted I uninstalled the latest windows updates and updated my video card driver manually. The system worked for about half a day before restarting again. I can now no longer get windows to load at all and the pc restarts after 5 - 10 seconds of being powered on. I have tried removing ram / cd drive / hard drive / CPU. One at a time and all together with no success. Even with all these removed the system reboots after 5-10 seconds. I am told this should not even be possible with all those components removed possibly pointing to a power supply fault... Any input / suggestions welcome.
Computer specs :
Windows 7 x64
6 gb ram
I7 quad core processor
Asus main board
GeForce gts 450 graphics
1.5 tb hard drive
Cooler master 500w power supply
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