Mac Pro died?! Stripy blue lines, e.t.c.

Discussion in 'Mac Pro' started by Genghis Khan, Jan 11, 2013.

  1. macrumors 65816

    Genghis Khan

    Joined:
    Jun 3, 2007
    Location:
    Melbourne, Australia
    #1
    Hey guys,

    I've had a problem with my 3,1 Mac Pro (see sig).

    I was on it and it froze and blue pixel stripes come across the screen. Upon restarting, it got back to the desktop (but not fully loaded), and the blue stripes came up again and it froze.

    Now, on restarting it gets to this screen...
    [​IMG]
    ...and proceeds to restart over and over again.

    Anyone have any idea what's wrong, or what hope I have to fix it?

    Thanks,
    - Michael
     
  2. macrumors 603

    justperry

    #2
  3. macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #3
    OP, don't bother. You need new graphics card... or bake this one -> google (it should work few weeks or months but it will fail again). 8800GTs are dying like that. It's common issue and symptoms are clear.
     
  4. thread starter macrumors 65816

    Genghis Khan

    Joined:
    Jun 3, 2007
    Location:
    Melbourne, Australia
    #4
    I did a safe boot, and it got me to the home screen. OS X said there was an error (foolishly didn't take note which), and I sent the report to Apple.

    I tried restarting it as a safe boot again and it stalled on the white screen with the apple logo and the dashed circle of lines that's meant to rotate was stuck.

    Unfortunately, I needed to get back to the desktop so i could eject the DVD drive to put the original install disk back in so that I could try the Apple hardware test, so I haven't managed to do that yet.


    I thought that could be it, so I switched the DVI cable to the ATI 2600XT. Would the 8800GT still crash the computer even if the screen's not connected to it?
     
  5. thread starter macrumors 65816

    Genghis Khan

    Joined:
    Jun 3, 2007
    Location:
    Melbourne, Australia
    #5
    I would like to report that you are correct sir.

    I took out the 800GT altogether and everything is back to normal.


    Many thanks for your help guys :)
     
  6. macrumors 6502

    Joined:
    Aug 17, 2012
    Location:
    Toronto
    #6
    give it a bake as suggested - i revived a HD5770 this way just last week!

    make sure you remove all the plastics/heatsink etc.
     
  7. macrumors 68040

    Mackilroy

    Joined:
    Jun 29, 2006
    #7
    I third the baking suggestion, I did that with mine and it fixed the card. Died again a few months later but then I just baked it a second time.
     
  8. thread starter macrumors 65816

    Genghis Khan

    Joined:
    Jun 3, 2007
    Location:
    Melbourne, Australia
    #8
    I'm adverse to this baking technique for a couple of reasons.

    1) I'm not a fan of temp fixes. Might as well move forward to the permenant fix if possible.

    But mainly...

    2) over the last few months, my Mac Pro has been not running as smoothly as it should (fans and hard drives spinning up randomly, prolonged startup, e.t.c.)' as soon as I took out the 8800GT, everything went back to normal.



    Am currently thinking of putting an EVGA GTX 650Ti SSC 2GB in there.
     

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