Ok, so at first, my nvidia 6800 would occasionally boot me off Starcraft 2 and cause a black screen to flash every few seconds. I reboot my comp, then everything is fine. Could still play WoW, watch movies, ect. A week later, I really feel like playing sc2 so I go back to it. A few seconds into the game, the screen goes fuzzy and the black screens appear. Eventually I get a blue screen saying nv4_disp dll is stuck in an infinite loop. Something I've seen before. So I reboot and try again. Same thing happens. After 6 reboots, I give up and go off to play some WoW. The screen starts freezing and eventually a blue screen makes me reboot again. I uninstall my old drivers for my video card then reinstall the newest driver from the nvidia website, then reboot. Blue screen as soon as my comp starts. Try again and instant blue screen. At this point, I system restore back 2 weeks. Now I can get passed the boot sequence, but I cant watch videos, or play any games, or pretty much anything outside looking at a few websites. Please tell me someone has experienced this before? I desperately need help.