Hi. I have an older Dell Optiplex 755 with a Core 2 Duo at 2.66 gHz, 4 GB Ram and a GT-630 2 GB video card which is about 8 months old. About a month ago the problem started after I used the GeForce Experience update with Game Ready Driver to setup Battlefield 3 which I was halfway through. When I entered the game after 2 minutes I get a buzzing, the screen goes black and a screen message No Video Input. I have to reboot the computer. Now it happens with every game (Sniper Elite 3, CODMW 3, etc. I uninstalled the driver and went to an earlier verison (347.09) but still had the same problem. Installed 350.12 and still have the same problem. Any thoughts I how I can solve this?