Post originale di: Hitordie ,
The best thing to try is to take the back off and disconnect the battery. try pressing down on the back of the iphone just above the apple and to the left. this is where the connector for the LCD is. It may have worked itself loose. Hopefully you can reseat it without having to do this. If that doesn't work and you dont want to take it apart, try plugging it into itunes and put it into the recovery mode. there are posts here that can walk you through that.