Help! Vertical lines on screen on startup

Discussion in 'MacBook Pro' started by dwright67, Nov 2, 2015.

  1. dwright67 macrumors newbie

    Joined:
    Nov 2, 2015
    #1
    Turned on my Macbook Pro 17" 8,3 the other night and the screen looked like this.

    I called Apple, and the tech had me do a couple of commands which fixed the issue. But I'm trying to figure out that happened. Is it the graphics card? The HD?

    I'm running the latest version of El Capitan.
     

    Attached Files:

  2. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
  3. lJoSquaredl macrumors regular

    Joined:
    Mar 26, 2012
    #3
    I had purple glitching on my screen from time to time. I sent it in and they labeled it as this problem instead. They ended up just replacing the display clamshell lol.
     
  4. Max8 macrumors newbie

    Joined:
    Apr 14, 2017
    #4
    --- Post Merged, Apr 14, 2017 ---
    What commands did you use? i think i might have the same problem.
     
  5. Sanpete macrumors 68020

    Joined:
    Nov 17, 2016
    Location:
    Utah
    #5
    Probably this:

    https://support.apple.com/en-us/HT204063

    But if it's intermittent, it may only seem to fix it. Could be failing dGPU or cable.
     
  6. tubeexperience macrumors 68030

    Joined:
    Feb 17, 2016
    #6

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