I recently built a new computer and sometimes when I open full screen games and videos or when I have a lot of chrome tabs open my screen goes one colour that seems to be an average colour of whatever is on my screen. I even got a new PSU, but that didn't fix it.
Specs
Graphics Drivers - Radeon Software Adrenaline 19.1.1
CPU - AMD Ryzen 3 2200G, 3.5GHz
Graphics Card - Radeon RX 580
Motherboard - Gigabyte B450M DS3H
RAM - 1X8GB DDR4 3GHz
PSU - Seasonic S12II 620W 80plus Bronze
Specs
Graphics Drivers - Radeon Software Adrenaline 19.1.1
CPU - AMD Ryzen 3 2200G, 3.5GHz
Graphics Card - Radeon RX 580
Motherboard - Gigabyte B450M DS3H
RAM - 1X8GB DDR4 3GHz
PSU - Seasonic S12II 620W 80plus Bronze