I need some help. While playing City of Heroes, or City of Villains, my screen will go black, like its going to the screensaver, then come back, but the image is still that of the game i was playing, but its all fuzzy and distorted, and the whole system has frozen up. Is this a virus?? I need some info, becaus I dont want to waste money on a new Hard Drive, Video Card, or Processor, if it isnt one of those.