Help With Random Freezing

AllanRawr

Honorable
Apr 10, 2013
50
0
10,630
Hello, I'm having a bit of a strange problem that I don't really know how to go about diagnosing. At random intervals, my computer will completely freeze. Keyboard, mouse, everything. And if I restart it, it will continuously freeze even on BIOS or safe mode. Though if I leave the computer overnight, it seems to fix itself, but after a few hours of use it returns.

I assumed it was an overheating problem, so took note of the temperatures that SpeedFan gave me, and left it open so I'd see them when it froze, and everything went up by around 2-3 degrees C, other than GPU which went from 38 to 43 C. CPU was only around 45. I can't really say I know what temperature they should be at anyway though.

Probably worth noting, around a day before this problem started, the power in my room flashed on and off a few times due to a ready-to-blow fuse which was fairly quickly replaced.

My specs are;
AMD FX-6100 3.3ghz
Asus M5A78L-M/USB3
8 GB RAM
Nvidia GTX 550 Ti
Windows 7 Home Premium 64-Bit

Any help is appreciated, as I'm fairly clueless as to what the problem is. Thanks.