So i was reading a book on my droid on the couch, and it slipped out of my hands, and hit the wood floor. it landed on its back, but it just... froze. so i took out the battery, and put it back in, and when i started it up, i could do stuff, like it let me unlock the screen with the swipe right, and it vibrated and made the unlock sound, and i can start my music and everything... (since i know exactly where it is lol), but the screen stays black. Any help? plz and ty!