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  1. #1


    Member Since
    Sep 04, 2009
    Posts
    2
    Caps Lock reversed
    Hi all,
    Two weeks ago, I bought a MBP 17 2.8GHz, OS X 10.5.8 (my first Mac ever) and I am now facing my first issue.
    The Caps Lock key is sometimes getting reversed. When the key is on (light on), it types lower case letters. When the key is off, it types capital letters. This issue appears quite randomly every 4-5 boots.
    How annoying for a machine this price! Did anyone encounter this issue on recent MBP? I have looked at different threads on Mac forums, but I did not find the solution. I am afraid this is the tip of a hardware problem. Software updates have been done. Please help me Mac Genius!

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    22,229
    Specs:
    Imac 27" Retina 5K, 512GB flash memory, 3.3GHz, 16GB memory, macOS Sierra beta.
    Go into System Preferences > Keyboard and Mouse > Keyboard > Modifer Keys and reset the options to default. Keep us posted?

  3. #3

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
    Location
    Napier NZ
    Posts
    3,298
    Specs:
    27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S
    Sounds like the sort of residue left over from a 3rd party app. What else have you been running?

  4. #4

    leopard-user1's Avatar
    Member Since
    Jan 27, 2009
    Location
    New York, NY
    Posts
    531
    Specs:
    17" MacBook Pro, 2.5 GHz Intel Core 2 Duo Processor, 2 GB 667 MHz DDR2 SDRAM, not unibody
    Are you sure you don't have a Phantom Keystroker plugged in to your MBP?

    (from scienceteecher.com)
    17" MacBook Pro, OSX 10.6.2 Snow Leopard

  5. #5

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
    Location
    Napier NZ
    Posts
    3,298
    Specs:
    27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S
    Perhaps not, see this in the explanation -
    Works on any OS (Caps-Lock toggle does not work on the Mac. May

  6. #6

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,494
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    Quote Originally Posted by leopard-user1 View Post
    Are you sure you don't have a Phantom Keystroker plugged in to your MBP?
    That looks pretty cool - only I couldn't use it at work - pretty much everything is critical - besides, they'd just be calling me to come fix it.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  7. #7


    Member Since
    Sep 04, 2009
    Posts
    2
    CAPS LOCK reversed follow up
    This is a very strange problem indeed. I tried to go on System Preferences / Keyboard / restore default. Does not work.
    I don't have anything running on my Mac. CAPS LOCK is on when I boot up. The issue comes back approximately every 4-5 times boots.
    I saw in some older forums that this was a problem some Mac had 3-4 years ago, but does not seem to happen much these years.
    Another lead to explore: it seems to happen when I use a 7 years old Microsoft optical mouse for a session and boot up the day after (mouse kept plugged or not). Does this make sense to you and what should I do?

  8. #8


    Member Since
    Dec 07, 2009
    Posts
    1
    I am having the same problem with caps lock
    Iīve just got a macbook pro last week and i am having the exact same problem. Sometimes the caps lock key light up by itself, and if I press it then the behaviour is inverted. I donīt know what to do now.

  9. #9

    Doug b's Avatar
    Member Since
    Jun 22, 2008
    Location
    Forest Hills, NYC
    Posts
    3,343
    Specs:
    15-inch Early 2008; Processor 2.4 GHz Intel Core 2 Duo; Memory 4 GB 667 MHz DDR2 SDRAM; 10.7.5
    Quote Originally Posted by jasedano View Post
    Iīve just got a macbook pro last week and i am having the exact same problem. Sometimes the caps lock key light up by itself, and if I press it then the behaviour is inverted. I donīt know what to do now.
    Seeing as how you bought it last week, you bring it back to where you bought it and tell them to fix it or replace it. That's what you do.

    Doug

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