So I recently build a gaming computer using high quality components. It's running great, except for one small problem: it completely freezes on a completely sporadic basis. Sometimes it will run all night without a problem, other times it freezes within minutes. It usually happens while I'm in a game, but it has happened while the only program open was Firefox and SpeedFan. The temps were in the mid 30s C in that particular instance. Can't say for sure the temps while I'm gaming, except I've never seen either the CPU or graphics card above 70 C.
When it freezes, all sound stops, I can't move the mouse, and the video freezes on the last image. Control-Alt-Delete does nothing, and I never get a blue screen. The only thing I can do is hit the reset button to restart the computer.
I made the mistake of trying Windows 8 in combination with the new hardware, so I blamed the problems on that for a while. I finally got fed up with it and went back to 7, where, much to my dismay, I discovered that the freezes are still happening.
I'm leaning towards a motherboard fault due to a problem that occurred when I installed it. I was wondering if there was a more likely suspect, or perhaps a better way to narrow it down than intuition.