It's weird I know. I can play Oblivion for hours on end, I can chat all day long. But I go out for a half hour or so, come back and I got this "PC Self Check" thing up on my monitor. I power on and its back up and running as normal. Usually I'd say I had bad ram, well Memtest86 ran for 8 hours and never found a single error. All my connections are seated, my HD's are a little hot but I've got a fan on them for now and my new coolers should be here Monday. I've ran defrags (with diskeeper) and chkdsk and have found no errors. The Error Log shows nothing out of the ordinary. The only software I thought might be an issue is Dr Divx, its crashed twice while encoding but the system has crashed many more times while NOT doing anything. I'm really out of options here, could the cpu be overheating maybe? If so how do I check. Another thing is sometimes when I boot I get a messages telling me my DRAM is timed to tightly. However its using default settings and I've even gone so far as to move all the timeings as loose as possible. Any other ideas out there?