Hello. My iphone doesn't start. If i connect it to my pc-<<usb device not recognised>>. I can't do anything whith it. Before this it had a white screen. I read somewhere that you fix that problem with a restore. i tried to restore it but itunes gave an error. then i clicked of on the error message and itunes stopped doing anything. i disconnected my iphone and after that i couldn't do anything with it. Please help me.