That's unfortunate :/. If you're really courageous and adventurous, you could get a screw driver and dig into your computer. Since you have no warranty, you don't have anything to worry about... except breaking something that is :P. If you do, I would check the wiring first. If all the wires are good, then I would take a look inside the screen and see if the camera bit looks suspicious. Bad crimp, a burn, etc.
If you're not feeling courageous, at least you have your USB webcam.