Odd Rectangle Appeared On Screen

Discussion in 'MacBook Air' started by may6100, Aug 14, 2014.

  1. may6100 macrumors newbie

    Aug 14, 2014
    Hello, I am new to this site. I have been having problems with this little rectangle block in the upper lefthand corner. I have tried restarting my computer, nothing has helped. Do you have any ideas of what is wrong?

    **I did not drop or damage my computer in any way.

    Attached Files:

  2. scaredpoet macrumors 604


    Apr 6, 2007
    Two possibilities: Either the OS install is corrupted, or the GPU is going bad. Since it looks like you can capture what the rectangle looks like via a screenshot, that rules out the LCD panel or its connectors being a problem, though you can further rule it out by connecting to an external monitor and see if the rectangle is still there.

    Is your Mac still in warranty?

    First thing I would do is boot into recovery mode. Is the rectangle still there? If not, it's the OS. Try a clean install.

    If the rectangle is still there, the issue is probably hardware, and could require a logic board replacement.
  3. lungbutter macrumors newbie

    Jul 2, 2014

    It appears Safari may be corrupted. This is from an early version of Mac OS but read through it and research it to determine if it applys to you.


    Let us know what you decide to do.

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