You may have to take it in to where you bought it from, if you have a warrentee. My folks had the same problem with their laptop, and half the screen was corrupted. They took it back to Best Buy (where they got the warrentee from), and in a few weeks, the laptop came back good as new.
If you do not have a warrentee on your laptop, I'm sure you can get it repaired. It may cost you a pretty penny, but it can get repaired.
Also, you technically can replace the screen yourself, although I would not advise it. It will take time, money, and expertise, and it would just be easier to take it into a shop for repairs.
In my own opinion, of course.