I built a new rig about 4 months ago, and was having a problem with games freezing up. I tried a few things, and fixed the issue by increasing the voltage to my RAM by .01 volts. About 2 weeks ago, the problem returned, and this time I thought it might be a driver issue. So I reinstalled windows, but the problem is still there. I have run Memtest86 for about 6 hours and didn't get any errors. Any thoughts?