Samsung Monitor with black vertical line

"Hi @tralph ,

Sometimes this can be caused by a loose tab connection on the display panel itself. The connections are very fragile.

Sometimes it can be fixed by just pressing very gently down onto the tab so that it remakes the connection but you have to get to them first.

Here’s a link to a video (there are plenty of others) that may help."

Just check for the flex cable inside the back of your monitor. You will have to open the back panel and have a look right there. probably a loose connection, or defective cable is your issue.

I had a black stripe down the left hand side and it seems Windows adjusted my display settings without me touching them so that the settings on my laptop matched my monitor. Went in and changed it to “Show on two displays only” I turned my monitor off and then back on again and it was resolved