trying to reset contrast on Imac 21.5, os 13.1. I adjusted up and all of the control panel options in display are gone and contrast is maxed out.
trying to reset contrast on iMac 21.5 2017 , os13.1. I adjusted contrast up and all control panel display buttons are gone, can no longer adjust anything in acessability/displays.
iMac 21.5″, macOS 10.12