Monitor Goes into Sleep Mode when entering Lobby

check if your computer is running correctly.

Does the whole computer shut down?

yeah its running correctly i can play other games it doesnt have any problems. 
But when I play Apex, the whole computer freezes. shut down & restart button won't respond when pressed, then the monitor just goes to sleep mode.

my drivers are up-to-date, I just installed the latest driver for my gpu. ill try repairing the game. i just verify it.

Is your monitor working correctly.

yes its working correctly.