Hi guyz, today when I started WoW, there were some artifacts all over the screen, so I left WoW and tried an another game, samething. I then shutdown my computer for 5min and tried again, everything was fine but I didnt play very long. Im wondering if there would be a diagnostic program like the one we can find for hard drives to test the reliability of my graphics card. Im worried it might be broken. Its a 7800gtx by the way. Thanks.