I dropped my Nokia Lumia 900 into the corner of a table (I know its a weird brake, it slipped out of my hand!) and the screen has one small crack/impact in it, but the whole screen is black. I can turn it on, the windows logo, the search icon, and back arrow light up like they are supposed to, but when I plug it into a computer it will not be discovered by the computer or by Zune. I want to access all my files/pictures but because it is not recognized, I cannot. Is there anyway to get around this?

It also makes sounds when its plugged in