[Q] Constant Black Screen, Need help. topic

I have a constant black screen on my HTC One Mini 2, havnt dont any updates or changes to the system files. It just all of a sudden stopped working, when I press the lock button and press near the bottom of the screen I can fell the vibrations from the lock screen. I cant reboot it as it wont turn off without getting past the lock screen. Can anyone suggest any help? Also could someone link the RUU as I cant find it anywhere, I have been searching for hours and I cant find it.