Hi! I've been playing cod black ops for a week now and i came up with a problem. the screen just stops moving. http://img209.imageshack.us/img209/4483/bocrash.png I built my computer myself about half a year ago but i haven't run to problems like these with other games. My graphics card is ATI radeon 5770. Battlefield bad company 2 still works fine. I hope someone knows how to fix it