kumaramit 0 Newbie Poster

I have a Lenovo 3000 G510. Recently I spilt water on it & since then the display has become blurred, display seems to be happening in slow motion. Like mouse will move very slowly, if I type something it will appear slowly. Basically refresh rate has gone slow. But when I connect external monitor to it, everything on monitor seems perfectly all right. Can somebody tell me what is the solution to this problem?