my gear s2 wont turn on, helppp!

A

AC Question

im not using this watch almost 2 months, put it on charger, i left it about 2 hours and the led is already green, but i cannot see anything on the screen its just black screen, i hold power button for 10 second voila only vibrate no display, and i already did some method on internet but none of these works. pls help, sorry for bad english