Hello, I just built my computer the other day and im having problems playing crysis and far cry 2. While playin the games my computer acts like it shuts down but all the fans and mods are still running but no picture on screen. I wasnt sure if it was just the card or not. I reboot and it comes on just fine. My specs are crosshair 3 mobo, AMD phenom 2x4 965BE, 8gb Corsair Dominator Ram, Ultra x3 1000wat psu. ATI Radeon 5770 video card and seagate 1.5 TB Hard Drive.I would greatly appreciate any help.