The stupid thing just resbots itself at total random. It may work fine for a few hours, maybe even a day or two, then bam it rebots itself. Once this happens, it will start happening progressively more frequently until the thing is not useable at all for more than a minute or two. There is no rhyme or reason to what the computer is doing when this happens. Sometimes you can play STALKER call of pripyat at about max settings with the card and or processor overclocked and it will run super for six hours. Then other times it will reboot while surfing the net or just idle on the desktop doing nothing at all. It seems to work better during the day than at night, and after a series of reboots it seems to perform better if I just leave it off and go to sleep, then when I wake up it will work again for a few hours.
I have reinstalled Windows three times (and made sure to update from the beta version of the OS I was using to a more legit version). Each time before doing this I used a KillDisk utility from Hiren's Bootkit to write zeroes to the hard drive.
I have taken it to a computer repair store 3 times and they never seem to reproduce the problem, they were able to run furmark and prime 95 for one whole continuos day with no interruptions and I have the logfiles to prove it.
I thought I had fixed it when I replaced the original 750 watt Cooler Master PSU when I discovered that a small screw had fallen into it, which I thought was causing the PC to randomly short circuit some how. Now I use the 1000 watt PSU as described above. It worked flawlessly for a day and a half before resuming its reboot problem.
Sometimes it works ok when I boot in Safe mode with networking, other times it doesn't. Same goes when I boot through the Linux based ASUS express gate thing that came with the mobo.
It used to go to a blue screen when this would happen, the code usually being 7E, 1A, or 3B. Now it either no longer has a BSOD error, or just flies right by the screen so fast you can't see it, I'm not sure.