video card

I have a 540s studio windows 7. I am having trouble with my video card. It has something to do with the catalyst control center. The screen gets big and  If I uninstall it and reinstall it will it fix the problem.? If you can tell me how to reinstall it ,that would help me out a lot. thanks , Julie

Hi Julie If you have Vista or win 7, try going into Control Panel, then Personalization, then click on Display Settings, then use the bar to adjust your screen settings.