Ummm... can anyone explain this screen to me?

Discussion in 'MacBook Pro' started by KeenMetal, May 9, 2010.

  1. KeenMetal macrumors newbie

    Jun 11, 2007
    Munich, Germany
    Yesterday I was browsing the web, and then everything froze, and the screen displayed a strange mosaic pattern on top of everything else. See screenshot 1.

    Suspecting it was the plugged in Hawking HWUG1A USB WLAN stick, I unplugged it and restarted my MacBook Pro (held down power button), and during startup it froze again – screenshot 2.

    After a second restart it was ok again, but it seemed like Mac OS X reset something, as the startup took a little longer than usual. Then, 30 minutes later, exactly the same thing happened – it froze and I needed two restarts.

    I've now stopped using the WLAN adapter and haven't experienced the problem again yet...

    Does anyone know what this is? What in the world would cause the system to display such strange patterns? Can a USB adapter corrupt the display driver??? :confused:

    (Btw, the LCD received a shock a long time ago, that's the reason for the crack on the top right corner and the malfunctioning black pixels running around the edge of the LCD, that has nothing to do with the mosaic patterns :)

    Enlarged parts:

    Late 2007 15" MacBook Pro, 2.4 Ghz C2D (SR) with a cracked LCD (but it still works!), 4 GB RAM, 500GB HDD; 16GB iPod Nano

    Attached Files:

  2. DesmoPilot macrumors 65816

    Feb 18, 2008
    The screen clearly has damage; the mosaic is being caused by a failed/damaged GPU.
  3. whateverandever macrumors 6502a

    Nov 8, 2006
    Looks like your graphics card is overheating to me. Not sure why the USB stick would cause that, but...
  4. DesmoPilot macrumors 65816

    Feb 18, 2008
    USB stick wouldn't cause it at all. Also, that looks like a lot more then simple overheating.
  5. Mirabella macrumors regular

    Apr 27, 2010
    It looks to me like your graphics card is failing.
  6. slpdLoad macrumors 6502a


    Jun 10, 2009
    My PowerBook G4's graphics card went bad and did something similar, although much worse. Affected everything, even the DVI output.

    If they don't replace your screen, they should at least replace your logic board.
  7. Fry-man22 macrumors 6502


    Nov 25, 2007
    +1 - I had three GPUs fail on my last MBP and they had issues that looked much like that.
  8. KeenMetal thread starter macrumors newbie

    Jun 11, 2007
    Munich, Germany
    Hmm, well then, the overwhelming majority suggests it is a GPU overheating issue. And I remember that my MBP was very hot to the touch at that moment, I guess that's the problem. Strange though... why would it overheat while browsing?

    I already had my logic board replaced for free in 2009 because my NVIDIA 8600M GT failed, leaving me with a black screen. That was a widespread issue with that particular model, caused by thermal issues due to NVIDIA's poor packaging if I remember correctly.

    And I thought the new replacement GPU's wouldn't have these problems anymore... :mad:

    Late 2007 15" MacBook Pro, 2.4 Ghz C2D (SR) with a cracked LCD (but it still works!), 4 GB RAM, 500GB HDD; 16GB iPod Nano
  9. Kadman macrumors 65816


    Sep 22, 2007
    Is that arcing line in the upper right something in front of the display or is that seen in the display? (and the smaller one in the lower right). If it's in the display then I'd say is a cracked panel and not a GPU. Yes I've seen the cool effects of bad or even just over heated GPU or graphics memory (I was an overclocker at one point in my gaming career). However, I've seen cracked or "over flexed" displays and they can create some pretty crazy looking images as well. One might think that it would simply not display for the affected sections but you can get rainbows, fuzz, etc.

    To me it almost looks like someone tried to close the lid by pulling at the upper right corner but the hinge was bound somehow and the display flexed (or took a nose dive while opened?)
  10. iLog.Genius macrumors 601


    Feb 24, 2009
    Toronto, Ontario
    The replacement GPU all have the same issue and there is no evidence that the replacement are free of faults. If you had previous issues, I would try to see I'd you can get a replcement to an iCore model or even the late unibody
  11. Fry-man22 macrumors 6502


    Nov 25, 2007
    It's not "overheating" it's FAILING - which means that no matter the temp it could be crap now. You should take it to Apple or a certified Apple repair center and get it replaced again.

    ALL 8600GT M have the "bad bump" material that cracks and does not hold the solder joins - this means they are ALL defective and will fail very quickly if subjected to changes in temp. I've read that the desktop 8600GT had this same issue, but since a desktop is not subjected to as many temp changes as a laptop most of those cards don't reach their failure point until after the warranty has expired. In a way we got lucky they started failing at the rate they did.

    I think that you have 3 years from the purchase date under the GPU extension for that model. If it's out of that period I would call Apple and keep talking to people until you either got a replacement board or MBP.

    Just a note but you should put this in your sig in the User CP. Don't know why one would go to the trouble to paste in a sig every time they post, but it makes quoting you get weird...

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