I'm guessing it has something to do with the video card and the driver. I'm having the same problem with my laptop. Every time I play a game, there's an area on the right and left side of my screen that doesn't display anything at all. No matter what resolution I select, it's like my screen is bordered. This problem only started when I changed by OS and lost the driver for the build in graphics card. I tried downloading it but, unfortunately does not support Win7. There was like 2 drivers before but now, there's only 1.