Computer keeps freezing (even mouse wont move)?

Right, a while back my computer started ******* me around, freezing at random moments in time, i thought it was the ram and brought new ram, turns out it still does it now and again, i have clean installed windows 7 64 bit, the temps are cool and just URGH

I preorded Guild Wars 2 and havent even played on it yet, and i have preordered borderlands 2 and its out in 3 days.

I need help

The temps are fine, clean install, not overloading it, not overclocking it, just factory.

Specs

Operating System

MS Windows 7 Ultimate 64-bit

CPU

AMD FX-8120 12 °C

Zambezi 32nm Technology

RAM

4.00 GB Dual-Channel DDR3 @ 501MHz (8-8-8-20)

Motherboard

ASUSTeK COMPUTER INC. M5A97 (AM3r2) 30 °C

Graphics

Q2202WB (1680x1050@59Hz)

1023MB GeForce GTX 560 (ZOTAC International) 30 °C

Hard Drives

233GB Seagate ST250DM0 00-1BC141 SATA Disk Device (SATA) 25 °C

For the love of god help me before i kill my computer or/and myself.