My LG G2 phone is on but screen won't come on, how can I fix it?

[AC Question]

lG G2 phone is on but screen wont come on

ok so i used my phone this morning worked fine, sat it down poured cofee and puff now the screen wont come on... wont knock on cant even push button in the back to make it come on....the phone isnt dead because the light in the back around the button is flashing i can still hear notifications as they arrive and the status light at the top is flashing.....screen will not come on...No i didnt drop it or get it wet...please how do i fix this?