Hey guys! I changed the battery of my iPhone 5 and now it seems as if something is wrong with the hardware. I can't turn on my phone (only black screen) but the phone is recognized by iTunes because of the DFU mode. I can't seem to leave the mode and I can't restore the phone because it gets stuck at the Apple logo with the progress bar and nothing happens while iTunes is saying "waiting for iPhone". Any help what could possibly have went wrong?