So last night i'm playing day of defeat, and i notice artifacts. then the screen goes blank, i hard shut down the machine, look inside and reseat all the wires. turn it back on and all is fine. btw the machine has been on for a solid week, but just in windows apps and the internet etc.. no games. so i go into day of defeat again same thing happens after about 5 mins. At this stage i'm thinking that either the fan isn't giving it enough cooling (running about 6000rpm) or the 3d chip (whatever the expression is) is getting defective, which is why its fine in windows but not in games. My psu is powerful enough, i haven't noticed anything strange in anything else. I'm not about to replace the card on an agp board, so it'll be an entirely new comp. any advice on this... i changed around the psu connector to the card incase one was faulty same issue still.