Help...I upgraded this afternoon after constant promptings from Apple. Left Mac mini 2018 running went to dinner and two hours later black monitor screen that will not display I am so screwed and so mad. What can I do
Do not have a clue as to what to do because monitor is completely blank after upgrading this afternoon on my 2018 Mac mini. All was great with Samsung monitor and the Mac Mini running Mojave until now (Sept. 8, 2019) Writing this on ancient iPad. So so sorry I let it upgrade!
