(EDIT: Tried this one 32-bit and 64-bit verision of ultimate, using different ROMs if you guys are suggesting WIN7 format, last resort would be going back to XP but I got so adjusted to W7 now it would suck ..) I have been having this problem for a while now and it is REALLY getting on my nerves! I am pretty good with computers and i'm sure I can follow instructions if you guys just give me a trail of what might be happening. I had none of these problems when using XP, I have been trying to uninstall NOD32 and replacing it with kaspersky, removing f.lux (screen light manipulating program), doing memtest which did not show any errors. What should I do about this?! Happens every one- or two days. Specs: ATI Radeon 4670 HD AMD Athlon II X2 250 3.0 GHz 4 gb RAM and if it would be any help GF615M-P33 Microstar-something motherboard. Please help me with this, it is driving me crazy. I appriciate it, and if no one can help me please forward me too another forum. Btw, I searched through the whole internet but people mostly had this problem with reboots, while installing or just booting, didn't find anyone who had few sec freeze followed by whitescreen that forced me too reboot.