In the past month, my Macbook pro, which I have had since May 2009, has started to act very strange. Sometimes when I watch videos online (collegehumor, youtube, etc.), or am just working on my laptop, the screen stops working. It goes mostly black, and a bunch of weird lines appear on the screen. The system hasn't crashed or froze, since I can still see my mouse because one little line follows its movement, and the audio still works, and I can still Command + Q and exit out of programs. I think the problem may have been that I slipped on the stairs one day holding my Macbook Pro and may have damaged the screen somehow, but I just want to know if this has happened to somebody else with their MBP, and what caused it? Also, if someone knows if there is a way I can fix this problem myself, it would be greatly appreciated, as I would prefer not to spend lots of money fixing it. Thanks everyone.