Here is what I am facing certain issue in my system. I had installed my second Nvidia 6600GT. There is a green vertical bar goes across the left side of the screen. I am not sure how this is coming. My monitor is fine and there is not issue with that. So there is not a hardware issue. But for the software issue how to fix the same. A other thing which I notice in that is that when I run a game there is green bar. It happens mostly while playing Call of Duty 2. The line is quiet thinner in Battlefield. If saw some of the similar cases on some forums which talk about the drivers update. I does not found the exact solution for the same. I checked the same in hd movies but there is no such issue. Does this game is issue with the resolution of the game. I tried a lower settings but nothing worked out there.