Pixelated iMac screen problems! Help!

Discussion in 'iMac' started by ib9, Jul 18, 2013.

  1. ib9 macrumors newbie

    Joined:
    Jul 18, 2013
    #1
    Hi guys, basically a big problem. My screen on my iMac has become very pixelated and i have no clue what or how it has happened.

    Really making it difficult to navigate and also sometimes clicking is a problem.

    Could it be a hardware or software issue?

    Below is a picture of what comes up:

    [​IMG]
     
  2. FreakinEurekan macrumors 68040

    FreakinEurekan

    Joined:
    Sep 8, 2011
    Location:
    Eureka Springs, Arkansas
    #2
    I'm guessing hardware. What model iMac? Anything changed recently (hardware or software)?
     
  3. ib9 thread starter macrumors newbie

    Joined:
    Jul 18, 2013
    #3
    Its an iMac 8.1, and no significant changes that I am aware of.
     
  4. FreakinEurekan macrumors 68040

    FreakinEurekan

    Joined:
    Sep 8, 2011
    Location:
    Eureka Springs, Arkansas
    #4
    That makes it an early 2008 model. I'd say most likely failure is the GPU - depending on which version of the 2008 iMac, might be an ATI HD2400 or 2600, or an NVidia GeForce 8800. Those cards are socketed so they can be replaced without a full logic board replacement.

    If you have a service center or Apple Retail Store nearby I'd take it in to be checked out. DIY replacement is possible but hard to confirm that's the problem so you might spend money on a card & not end up needing it.
     
  5. ib9 thread starter macrumors newbie

    Joined:
    Jul 18, 2013
    #5
    Thanks a lot for your help, I will get that checked out asap and come back to here and let anyone know in case they're facing the similar problem.
     

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