my phone not turned on

[AC Question]

2 days ago...my samsung galaxy younggt s6312..show firmware update....but i cant update it....yesterday morning.....its like boot....and my battery also empty....my phone was turned off....still now its not turn on...i m tryinf volume key.....home key...and power button together , but it did't work

 

[B. Diddy]

Welcome to Android Central! Try booting into Recovery Mode following the steps in this video. But instead of selecting Wipe Data, make sure you select Wipe Cache Partition.

https://www.youtube.com/watch?v=O4TtEXfpI_Q

If the battery doesn't seem to charge, also consider trying a new battery.