[iMore Question]

Stunned and turn dark and can't revive

[Highrisedrifter]

Hi there

What happens when you connect it to iTunes? If it's recognised in iTunes, you could try a backup and restore to see if that works.

Does a long hold (try twenty seconds or more) of the power button and home button do anything?

[MaxSmarties]

if a soft reset won't work, try this steps:
How to put your iPhone or iPad into DFU mode | iMore