I have been having this problem for about the past 3 or 4 days. When I try to play games like STALKER , Farcry 2 and Metro 2033 ( just got it a week ago and cant finish it :[ ) my PC completely freezes up. Mouse and keyboard becomes unresponsive. And on my screen all these multi-colored dots appear. Like for example where the shadow for a tree is green dots appear inside the shadow, and on the tree itself pink/white dots show up. And as of right now my resolution set lower than 1440x900, not sure what it is set to now. Plus I have green vertical lines running through my screen at the moment. Video card: 8800 gts alpha dog edition 512mb RAM 4 gigs Processor: Intel Core2 Duo CPU E4600 @ 2.40GHz 2.40GHz Vista 32-bit And I just noticed that under device manager on my v-card it says "Windows has stopped this device because it has reported problems. (Code 43)" Thanks for any help and sorry for the long post. Edit: uninstalled my v-card rebooted and let Windows install the the drivers, rebooted and the green lines are still there.