Can anyone help me out with some issues that I am having with my HTC ONE M8?

A

AC Question

Blacxkscreen + Reboot HTC ONE m8

Even though I rebooted my Htc after finally managing to turn it on because the master reset Vol down power vol up or whatever didnt actually work at all untill I turned the ph on...

so I rebooted (because setting/reset wasnt working) & my Htc is still blackscreening :( I dont wanna send my ph away, is there anything else I can do ??