Aside from reformatting, the only suggestion I can think of is to check all of your hardware drivers and bring them up to date. And perhaps list all of your hardware (Everest can make this a bit easier for you) and maybe someone can verify whether or not there are any compatibility issues. Like I said, I'm not a hardware expert (my specialty is malware and software), so my knowledge in the area only extends so far. If you hadn't PM'ed me, I probably wouldn't have even bothered. Heh.