black vertical line left corner of my screen

Discussion in 'Mac Basics and Help' started by connos123, Aug 22, 2014.

  1. connos123 macrumors newbie

    Aug 22, 2014
    A few days ago a black vertical line appeared on the top left corner of my screen, about 3 inches long. It's not a hardware problem, as it appears on my TV as well when I connect my mac to my TV. It hides everything behind it and sometimes makes that area look distorted. It even shows in fullscreen mode in movies. I have a mac air 10.9.4
    I've been using Final Cut Pro X and I think it started around the same time; I read somewhere that it might be a graphics problem, but no solutions.
    I took a screenshot, attached below, though not sure if it shows here.

    Thanks in advance for your help.

    Attached Files:

  2. Tomorrow macrumors 604


    Mar 2, 2008
    Always a day away
    If it's showing up on your TV as well, it sounds like a graphics problem.
  3. LarsMN macrumors newbie

    Nov 26, 2014
    Same issue here...


    I have recently encountered the same problem on my 2011 MacBook Pro. I am currently running Mavericks 10.9.5. I have been using Final Cut as well. I can't tell if the black line/rectangle appeared while the program was actually running, but after reading your post I'm thinking this can't be a coincidence.

    After searching for a while without success, I saw your post here and just wondered if you have found a solution yet?

  4. chabig macrumors 603

    Sep 6, 2002
    For a vertical line, that's pretty short (maybe only 5 or 6 pixels high). :)
  5. ajbudis macrumors newbie

    Jun 30, 2013
  6. LarsMN macrumors newbie

    Nov 26, 2014
    That solved it! Thanks a lot!
  7. ajbudis macrumors newbie

    Jun 30, 2013
    No problem, glad I could help

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