Bizarre Keyboard Problem - Please Help!

Discussion in 'MacBook Pro' started by windowstomac, Jan 29, 2013.

  1. macrumors regular

    Joined:
    Jun 23, 2011
    #1
    Hi there,

    I have a major problem.

    A whole bunch of keys on my MacBook Pro have gone dead - they are random and not in top left to bottom right lines like I have seen in the past when a keyboard has shorted or has water damage.

    More bizarrely still the exact same keys don't work on an external USB keyboard.

    I have full disk encryption on. I can't type in my password.

    I've seen stuff online about this being related to "mousekeys" but I can't get into OS X. I have reset PRAM and SMC, or at least I think I have, as I can't be sure whether the option and control keys work.

    I can't boot to CD as the C key doesn't work.

    Please help - I have deadlines!

    B
     
  2. macrumors 68030

    yusukeaoki

    Joined:
    Mar 22, 2011
    Location:
    Tokyo, Japan
    #2
    Well did you do water damage or anything you can think of to the computer?
     
  3. macrumors 6502a

    duervo

    Joined:
    Feb 5, 2011
    #3
    Boot the system in safe mode, then remove your third-party software that has anything to do with the keyboard or mouse. (Hopefully the keys needed to boot into safe mode still work.)

    http://support.apple.com/kb/HT1455
     
  4. thread starter macrumors regular

    Joined:
    Jun 23, 2011
    #4
    Just thought I'd update on this. After replacing the keyboard (NOT an easy job), the problem remained. None of the startup shortcut keys worked either. Eventually, after hours of frustration I managed to get in and wipe the hard drive, then reinstalled Snow Leopard and hey-presto, it was back and working!

    Moral of the story: Macs can have some STRANGE software / firmware problems. I've worked in the IT industry for many years and I was utterly convinced it was a hardware issue.
     

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