Labtop Screen Problems

Last night I Installed the game Counter Strike. I tried playing the game but it froze on me. It would not let me do anything, so I took the battery out and restarted the computer. When I turned on the computer I remember it said that I had incurred a major crash. Now my computer is a little fuzzy, and now the screen is not taking up the full space. There is about a 2" space on each side that is blank.. If you know of anything I can do to fix this I would appreciate it..