Sudden no signal on moniter

My moniter went black and showed no signal suddenly while i was playing rdr2

Ive tried Disconnecting and reconnecting the cable Taking out and putting back in both my ram and my GPU Turning it off and on again Checking the source on my moniter

Im really not sure what to do is it my GPU is that broken or is my moniter?

EDIT: I forgot to mention i use windows Since then i tried taking the Cmos out and testing it seems that its got power The power LED next to my power button is no longer on when i boor it neither id the hard drive LED On my motherboard (MSI b450 gaming plus) the red LED on the right is solid red but im not sure if that means anything

EDIT 2: Its working fine now proberbly should have expendes more options before going to reddit but i panicked