Random restarts

[Mnx4]

Hey, recently, my computer has randomly been restarting, but only when it's not in use. The time it takes to restart from when I stop using it generally varies. When I come back from something an hour later, I'll see that i'm back at my login screen. I've checked my power profiles and it doesn't seem that I've told it to shutdown after going idle or something. Also, it seems that it only ocurs when I'm not actively using it, like when I leave AIM running or have a download program going, and even defrag, it'll restart. But it will not reset if i'm opening folders or playing a game for 6 hours straight. Any i deas?

 

[digital_exhaust]

HAve you actually seen it re-start? Or does it only happen when your away from your computer?

 

[Mnx4]

I've seen it restart once while i was sitting there, reading a book. I wasn't staring at the screen, but I had nothing up and running, and I just saw it go blank and then the bios startup screen comes up and it goes through the startup process.

 

[Mnx4]

any ideas?

 

[Taffy Apple]

First thing, turn off automatic restarts.

Start, control panel, system, advanced, start up and recovery, and untick automaticlly restart. Next wait and see what error shows up in the bsod.

While your waiting for it to fall over again, check out your event logs, there maybe something in there that may point at something.

May also be worth trying memtest86 to test your ram.