Ok, sometimes when I start playing BF2 and just after I get into a game my computer freezes. I have a fast enough video card, eVGA 256-A8-N344-AX Geforce 6800GT 256MB 256-bit GDDR3 AGP 4X/8X Video Card, and 1.5 GB of RAM. And its not overheating because it happens only sometimes when I first...