HTC One M9 wont turn on having replaced the battery
crwdns2934249:0crwdne2934249:0:
I have just replaced the battery in this phone for a customer, and now it wont turn on. I can plug it in and there will be a charge symbol with a percentage and a small LED at the top like there should be. But if i press the power button nothing happens. I have tried pressing the volume and power buttons combined for 30 seconds but still nothing. Starting to panic a bit