Why did my Alcatel Onetouch Idol 3's screen blacked out while using it suddenly?

[AC Question]

I have an Alcaltel Onetouch Idol 3 and while using it, it suddenly blacked out and didn't come back to life again no matter how many times i tried.

It had been just a year after my purchase that it got blacked out so suddenly and never to switch ON again.

 

[B. Diddy]

Welcome to Android Central! When you try to power on, do you hear anything or feel a vibration? If not, either the battery failed, or there's some more serious problem with the motherboard. Is it still under warranty, or did that just expire?