Question I have a green screen pop up when I put a video into fullscreen

Jordanicus

Prominent
Aug 4, 2020
28
1
535
I just got a new monitor and I just setup dual monitors. Now when I play a video it turns green for two seconds then back to normal. My pc has never done this before and Im not sure what is going on. I have one asus 144hz and a lg 75hz. I have not changed any of the monitor settings because I dont know anything about monitors. Any advice or suggestions would be helpful. Thanks!
 

Jordanicus

Prominent
Aug 4, 2020
28
1
535
full system spec? include make and model of the psu?

test with just the new monitor?
Specs:
cpu: r5 3600
gpu: msi rx 580 4gb armor
mb: msi M350 bazooka
ram: 1x8 geil evo potenza 2400mhz
psu: 450 watt (thats all I know Im not sure what brand it is)

I bought this as a pre built and I have been upgrading the parts This has never happened before and its only happening with the new monitor. Thanks for the help!