Have been playing WOW on my current system for 1 year and it is capable of running COD4 without any problems, only there are problems. I can play for 3-4 hours without any problems and then I get a black screen followed by artifact and then the BSOD! On one occasion I minimized COD4 to desk top and when I restored it the game was back to normal as if nothing happened. I fear that this is the first signs of my card failing... but after just 1 year! Anyone had these problems before or knows I they can be sorted? Brand new game and cant play it online.. I can play single player though. HELP!