i just put together a new comp, and when ever i play a game (so far doom 3, farcry, cs source) the games lockup and freeze while playing and usually my computer restarts itself and right before i see a blue screen telling me about my video card (but it restarts before i can actually read much of it) then windows restarts with an error saying my display driver is causing the problem. The lockups are random could be as soon as i start the game or after a few minutes of playing (though cs has not been locking up recently). My system runs really cool with temps in the low 30s celcius, and the processor barely peeks above 40 when in serious use. All drivers are current, and i've even fiddled with beta nvidia drivers -- nothing works. the rest of my specs are as follows: athlon64 3400+, epox 8KDAJ mb, 1gig of corsair xms mem, and evga 6800 ultra, nothing is overclocked. I still insist its a driver problem, or perhaps a bios setting which i doubt. Oh and the psu is a 480watt thermaltake. Don't know what else it could be unless its bad hardware--sure hope not. Games run fine otherwise, until they lockup Hoping someones got some advice. Oh one more tidbit, very rarely while in windows the monitor flashes black for a second then goes back to normal (i have a dell 2001fp lcd monitor). Thanks!