Black block in upper corner of screen - HDD failure or graphics?

Discussion in 'MacBook Pro' started by pat park, Jun 29, 2014.

  1. pat park macrumors 6502a

    Nov 29, 2011
    I'm running a late 2011 MBP 13". 500 GB HDD, 16 GB RAM. Otherwise stock.
    Has been super reliable. Mostly web browsing, email, Word/Excel, some minor video editing and photo editing. Not a graphics design/web guy. So it's not getting heavy use.

    I noticed this weird black block in the upper left hand corner of my screen. Restarting, putting it to sleep does not make it go away.

    Should I be worried? HDD failure? Integrated graphics dying? Motherboard gasping for life?

    Attached Files:

  2. Mac.User macrumors 6502

    Aug 25, 2013
    Looks like a graphical issue, Maybe the GPU dying or over heading.
  3. pat park thread starter macrumors 6502a

    Nov 29, 2011
    Another thing, it only happens when hooked up to a monitor. Using the laptop screen, the black box isn't there.

    Should I consider SMC and or PRAM reset? Just did a disk utilities last night and repaired permissions etc.
  4. laurihoefs macrumors 6502a


    Mar 1, 2013
    Could just be a glitch with drawing the shadow or chrome of some window you have open.

    Does the black box move or disappear, if you go to System Preferences -> Displays -> Arrangement tab, and change the position of your desktops by dragging the blue desktop boxes with your mouse?

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