Question: iMac (Late 2015) Black Screen on High Brightness
Hey guys, i bought a used iMac 2015 model yesterday which is pretty good but has been causing some problems since i got it.
I managed to re-format it from the root and install the newest OS to it, however i've been having some problems with it.
When i try to turn the brightness of the screen over 3 bars, the screen goes black and i have to lower it from my keyboard and restart the screen (CTRL+SHIFT+EJECT) for it to work again. I cannot seem to fix it whatever i try. Any suggestions?
Thanks in advance!