I don't have any answers but I'm having similar issues. I did a screen replacement a iphone 5c and now I can't get it to turn on. It will vibrate but nothing on the screen. The old one was working just cracked screen. So I put it back on and it did the same thing. I tried holding the home and power button for 10-15 secs still nothing. I can't lose the information that's on it isn't mine. The parts were new so I don't understand why. I've ordered another complete set with everything . Until then does anyone have any suggestions.