Resolved Brand new iMac 27 black screen after update!

Discussion in 'iMac' started by McCol, Jun 11, 2019.

  1. McCol macrumors newbie

    McCol

    Joined:
    Nov 7, 2016
    #1
    As title says really

    Took delivery of my first iMac today after years of Windows machines.

    All was well for an hour until it completed an update, on restart half the screen was multi coloured vertical lines, forced a restart now it's just a black screen.

    I'm assuming the gpu is knackered but it seems strange it was ok until update.

    So far I've tried the command/option and P + R keypress in restart and unplugged power but no success

    Any tips from anybody or is it back in the box and back to retailer!??
    --- Post Merged, Jun 11, 2019 ---
    Should add that the screen does light up and I can hear the internals working away, makes me think it is the GPU.
    --- Post Merged, Jun 11, 2019 ---
    An update
    Got past the black screen using the option/command with p + r keys but now it's just thick pink vertical bars across the while screen with black vertical lines through them.
    Looks like it's going back.
    Very frustrating
     
  2. 8CoreWhore macrumors 68020

    8CoreWhore

    Joined:
    Jan 17, 2008
    Location:
    Big D
  3. McCol thread starter macrumors newbie

    McCol

    Joined:
    Nov 7, 2016
    #3
    UK retailer Very.
    Decent discount for first order and Quidco etc.
     
  4. McCol thread starter macrumors newbie

    McCol

    Joined:
    Nov 7, 2016
    #5
    Managed to get to log in screen this morning with fainter bars which then became thick bars

    Pics

    20190612_065925.jpg 20190612_065858.jpg 20190612_065830.jpg 20190612_065811.jpg
     
  5. McCol thread starter macrumors newbie

    McCol

    Joined:
    Nov 7, 2016
    #6
    All sorted with Very.

    New replacement being delivered tomorrow. Great service from a company who often get slated by consumers in the UK.
     

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5 June 11, 2019