Suddenly there is a very thin vertical (dark) line on the screen for my Mac mini, how do I turn it off
The LG screen screen was dusty so I used liquid cleaner to fix it, and afterwards there was a very thin golden line and almost as its shadow a slightly wider dark line.???... and to the left side a blueish vertical line too.
The mini was ON and screen in "sleep" mode!
Maybe the cleaning set of some action I was not aware of, but I cannot find any where this might be changed.
I am a very experienced user but never seen this before
hope someone can assist.
The Mini is running 15.6.1
Palle ****
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Mac mini
