iMac 21.5 inch display issue (mid 2010)

Discussion in 'iMac' started by fredsarran, May 4, 2011.

  1. fredsarran macrumors 6502

    fredsarran

    Joined:
    Jun 15, 2008
    #1
    Hi,

    I have the display looking all scrambled during the transition between the boot up screen and login screen (only for 3 seconds or so) :

    [​IMG]

    However, the display is fine once logged in. What is the problem ? I phoned Apple and they have no clue.

    This screen problem randomly happens, it does not happen every time.

    Thanks for any help,
     
  2. fredsarran thread starter macrumors 6502

    fredsarran

    Joined:
    Jun 15, 2008
    #2
    Solution !!

    Ok, so Apple replaced the Graphic card and issue still happening. After a lot of brain storming, I deleted one by one apps/software that starts at the same time the issue is happening, and I discovered it is the Air Display app by Avatron that creates the problem.
     

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