Ever since I built my PC a few weeks ago, I've has trouble playing games. At first, Battlefield 2 would freeze quite a bit, and it finally quit doing that as much. But whenever I play the Compamy of Heroes Beta, I can't play for more than 2-3 minutes without it freezing, followed by a horrible screeching noise from my speakers. Does anyone have an idea of what could be causing this? Could it be the integrated sound on my mobo is causing it to freeze? Last week I had trouble with that until it finally started working again. Thanks for any help.