What is it? Display or GFX-Card?

Discussion in 'iMac' started by timbuk2, Feb 4, 2015.

  1. timbuk2 macrumors member

    Apr 22, 2005

    Got this rather strange display-errors after 1 week of vacation on my 27" mid-2011 imac.
    Is this a Display error or is it the gfx-card?

    It's not a static image. There is some strange flickering and different Images...
    See The Screenshots.

    Thank you for your hints

    Attached Files:

  2. redheeler macrumors 603


    Oct 17, 2014
    Looks like the GPU is beginning to fail. The 27" 2011s are known to have defective GPUs, so much so that Apple even set up a replacement program. See this article:


Share This Page