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Mountain Lion upgrade bricked my Macbook Pro?

506 Views 10 Replies Latest reply: Feb 16, 2013 12:28 PM by joeck RSS
joeck Calculating status...
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Feb 15, 2013 4:41 AM

I own a Macbook Pro, early 2008 Model, and it ran Mac OS 10.6.8. Yersterday I started to upgrade it to Mountain Lion from the App Store. First it worked like a charm. It ran throu and I could login. But after rebooting, the Display stays blank and no keyboard input what so ever works. It does not react on reseting the PR Cache, or booting to Target Mode or using a (10.6) Startup Disk, but you clearly hear that it is running, what can I do?

MacBook Pro, OS X Mountain Lion (10.8)
  • Russa Level 4 Level 4 (1,315 points)
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    Feb 15, 2013 5:47 AM (in response to joeck)

    .. I have an Early 2008 MBP and M/L runs fine on my machine.. pull the battery and power cord..  try a PRAM and an SMC reset.. this could be a coincidental video failure.. try rebooting from Recovery mode (Command + R at restart).. after this take it to an Apple Store genius for a look.

  • baltwo Level 9 Level 9 (59,145 points)
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    Feb 15, 2013 12:47 PM (in response to joeck)

    Alternatively, restore your previously good SL installation and see if the problems persist.

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • Barney-15E Level 7 Level 7 (33,270 points)
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    Feb 16, 2013 7:08 AM (in response to joeck)

    Do you have an external monitor you can hook up to it?

    If it is running, it may just be the display, but it may be the Graphics card failed.

  • Barney-15E Level 7 Level 7 (33,270 points)
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    Feb 16, 2013 10:54 AM (in response to joeck)

    joeck wrote:


    Well wiping trhe Harddrive clean and reinstalling mac os did not work either. I am confused, what could possibly go wrong when upgrading to Mounatian Lion?


    However, your graphics card or something else could have failed coincidentally during the install. The install might have stressed that component to the point that it failed.

  • Barney-15E Level 7 Level 7 (33,270 points)
    Currently Being Moderated
    Feb 16, 2013 12:13 PM (in response to joeck)

    I don't know why bad RAM would cause that problem, but it could be.

    If the keyboard isn't working, then I would assume a major hardware failure of some sort.


    I don't think anybody here is going to figure out a solution. Need to take it to a service center.


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