I'd say every third day, when i play a game COD4, L4D demo, COH, CS:S, etc) my screen starts going black every tens seconds or so, with the message "display driver nts something something has crashed but has recovered." Restarting the computer fixes the problem for a day or so. I tried reinstalling drivers and re-seating the card, what could be causing this? My guess was either PSU, (mines a bit old) the card its self, or that I just need to do a clean install. Thanks!