lg g4 wont turn on

[Techanex]

So I charged my LG G4 over night and turned it on and it was just a black screen. I tried taking out the battery to turn it off because I couldn't do it normally because it was a black screen, I put the battery back in and tried to turn it on and it wouldn't. I tried loading recovery mode but it wouldn't start up.

 

[Britney Amber]

Have you tried flashing a custom ROM?