Lumia 920 Not Starting

[Kainaat Rokstar]

Ok hi all, yesterday i was using whatsapp and facebook and suddenly screen stucked n gets off after 3-5 min. I tried soft reset the phone vibrates after 10 sec but not starting m very afraid coz I bought this phone from USA carrier at&t red unlocked. hard reset also not working please help me

 

[hermantj]

Couldn't it be the screen that is broken?
The phone starts but you cannot see it.

 

[Kainaat Rokstar]

i dont think soo didnt dropped the phone the display went after 5 min of phone stuck...