10 Replies Latest reply: Feb 16, 2013 12:28 PM by joeck
joeck Level 1 Level 1 (0 points)

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)
  • 1. Re: Mountain Lion upgrade bricked my Macbook Pro?
    Russa Level 4 Level 4 (1,315 points)

    .. 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.

  • 2. Re: Mountain Lion upgrade bricked my Macbook Pro?
    baltwo Level 9 Level 9 (60,125 points)

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

  • 3. Re: Mountain Lion upgrade bricked my Macbook Pro?
    joeck Level 1 Level 1 (0 points)

    Thanks I will try that later, but since it was not reacting on either PRAM Reset or on booting to Target Mode, I guess I have little chance to reset the previouse state.

  • 4. Re: Mountain Lion upgrade bricked my Macbook Pro?
    Barney-15E Level 8 Level 8 (35,295 points)

    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.

  • 5. Re: Mountain Lion upgrade bricked my Macbook Pro?
    joeck Level 1 Level 1 (0 points)

    Unfortunatly none of the suggestions above worked. It seems like the boot sequence is somehow damanged, and there for all recovery / alternative boot options are not working. is it possible to remove the harddrive reinstall mac os on it in order to repair any damages? Or is the EFI bootloader stored on some ROM in the machine?

     

    And is it possible the the hardwrare got damaged by upgrading? How is this possible? Thanks, for your help.

  • 6. Re: Mountain Lion upgrade bricked my Macbook Pro?
    joeck Level 1 Level 1 (0 points)

    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?

  • 7. Re: Mountain Lion upgrade bricked my Macbook Pro?
    Barney-15E Level 8 Level 8 (35,295 points)

    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?

    Nothing.

    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.

  • 8. Re: Mountain Lion upgrade bricked my Macbook Pro?
    joeck Level 1 Level 1 (0 points)

    That might be the case, but as I mentioned in the beginning the keyboard is not responding to any action (caps lock is not even showing a green light). So I guess it must be something wrong even before the system boots.

     

    Ah I also have 3rd party ram build in, could that be an issue, in combination with an Efi upgrade, does Mountain Lion/ Lion upgrade EFI?

  • 9. Re: Mountain Lion upgrade bricked my Macbook Pro?
    Barney-15E Level 8 Level 8 (35,295 points)

    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.

  • 10. Re: Mountain Lion upgrade bricked my Macbook Pro?
    joeck Level 1 Level 1 (0 points)

    Well yes, may be you are right, I guess this is a serious problem. I am just afraid that taking it to the service will cost much more then the macbook is worth, and I guess that Apple does not care that it happend when I made the upgrade to mountain lion, at leased I could claim the money back for the mountain lion purchase

     

    Thanks a lot for you help.