オリジナル投稿者： Brad ,
You have to place your iPhone in Recovery Mode and Restore the iPhone with iTunes on computer. To be able to do this, it is simple with a Power Button, since yours is faulty, this is a problem. You could wait for iPhone to power down, then place in Recovery Mode. I would try a utility such as TinyUmbrella to place iPhone in Recovery Mode, then Restore with iTunes.