Iphone 4s screen is frozen blue?

I dropped my Iphone earlier today and the whole screen turned black with blue vertical stripes. My lock button is broken so I can't shut off my iphone. I've already gone onto icloud.com on the computer and erased my iphone so I could restore my iphone on ITunes since you need to turn off "Find my Iphone" before restoring your phone. But after erasing my iphone on the icloud website, my Iphone account no longer showed up on iTunes. Does anyone know anyway I could get my phone to unfreeze and back to normal? This happen to anyone else and what did you do?

Fix it