My HTC One M8 is dead?

[Peterov]

I came home, I look at my phone, the screen turned off. I click "Power" to turn it on, don't respond. Hard Reset didn't help.
Vibration function works, touch probably also buttons too, but screen didn't.

The screen dead?

Phone HTC One M8.

 

[belodion]

That is one possibility. It would need diagnosis by a repairer.