Help! 24" iMac screen turns solid colors, freezes

Discussion in 'iMac' started by losingground, Sep 28, 2009.

  1. losingground macrumors newbie

    Joined:
    Apr 10, 2003
    #1
    Hello everyone,

    I have a 3.06 GHz, 4 GB, iMac running 10.6.1. and I have a weird problem: while I was running Windows 7 under Boot Camp, during a simple task, my screen suddenly turned a solid shade of gray. Having no other option, I held the power button, turned off the computer, and turned it back on.

    When I booted back to OS X, it happened again immediately upon opening iTunes. This time the color was solid black. Concerned, I turned off the computer, waited a moment and booted it back up in Safe Mode, where I currently have no problems whatsoever. From Safe Mode I repaired my disk permissions, cleared my caches, and zapped the PRAM while restarting my computer back into normal mode. Unfortunately the problem persists, this time my screen turning a solid shade of dark purple.

    I'm going to call Apple Care in the morning, but has anyone heard of an issue like this? I searched the forums for a solution, but wasn't sure what terms to search for. If anyone has any advice or questions, please let me know!

    (Archive and installed Snow Leopard a while back, when it was fairly new, haven't had any problems like this before. Computer seems to run perfectly fine in Safe Mode, vs normal when it immediately becomes unusable upon opening any application. Windows 7 suffers the same problem.)
     
  2. Maserati7200 macrumors 6502a

    Maserati7200

    Joined:
    Mar 17, 2009
    Location:
    11230, Midwood, Brooklyn, NY, USA, North America
    #2
    Ruh Oh. I'm guessing logic board failure?
     
  3. losingground thread starter macrumors newbie

    Joined:
    Apr 10, 2003
    #3
    Could the logic board fail and still operate totally normal in Safe Mode? I've been posting/computing from Safe Mode for about an hour with no problems :(
     
  4. Maserati7200 macrumors 6502a

    Maserati7200

    Joined:
    Mar 17, 2009
    Location:
    11230, Midwood, Brooklyn, NY, USA, North America
    #4
    I'm not so sure about that. But when I read your story the first thing that came to my mind was logic board failure. I could be wrong though. Hopefully you'll get more replies...
     
  5. Mike Macintosh macrumors regular

    Mike Macintosh

    Joined:
    Sep 20, 2009
    Location:
    Washington State
    #5
    It could be the GPU also, they do that crap before they go also.
     

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