Question about Panasonic Toughbook CF-51 Notebook

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Panasonic Toughbook CF-51 laptop blue FN key locked on


The blue Fn key which is used to make the other keys with blue functions work is locked on. To type I have to hold down the fn key and only get lowercase letters. I can not get capital letters using this method. If I don't hold down the blue Fn key I just get the limited blue functions from my keyboard.

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  • Anonymous Jun 19, 2008

    fn locked

  • Anonymous Nov 02, 2008

    I have same problem, I tried everything and still i can not make it work.

  • tracynette Feb 05, 2009

    Same problem...numlk didn't solve it

  • SMITBILL Apr 19, 2009


  • Anonymous Apr 25, 2009

    Just had the same problem with the FN key. Works perfectly now after pressing the FN and NUMLOCK together as suggested.


  • Anonymous Apr 25, 2009


  • Anonymous Mar 16, 2014

    turn on function keys without holding fn key

  • Anonymous Mar 25, 2014

    i have a problem about my fn+f1 functions key



4 Answers

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Hit "FN" and the "NUM Lock" key together to unlock it.

I believe thats the combination.

Let me know.

Posted on Jan 09, 2008

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  • brian c
    brian c Jan 09, 2008

    Or, try holding the FN key for a few seconds. It varies of different models.

  • Anonymous Jul 29, 2017

    Fn+ NumLk solved this issue.. thanks Brian

  • Anonymous Jan 15, 2018

    Thanks Brian nja yam uyi life saver


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I had the same problem and solved mine by hitting NumLk key only. I have a business toughbook, CF-W7

Posted on Dec 15, 2008

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NumLk key only - that's the solution. Thank YOU! :)

Posted on Mar 29, 2010

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Thank you that worked for me too.

Posted on Feb 06, 2015

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Panasonic CF-51 Toughbook Fn keys don't work at all

The following website contains the needed drivers:

Select your model of CF-51 Toughbook, but you MUST be specific. There are about nine variations of the CF-51 so you must use the right drivers.

Download the hkeyapp, hkeyset, and hotkey files and unpack all files. Use the default unpack locations. If you download the files for a laptop version that is not your own, when you try to run any of these files the computer will tell you that the file is not for your model. If the files successfully unpack then you know you have the right files.

For hkeyset and hkeyapp you must run the set-up applications in the unpacked folders.

Go to Control Panel>System>Hardware>Device Manager and go to Other Devices.

The Hotkeys will appear as an "Unknown Devices" so if there is more than one, right click and choose "Update Driver".

Select "Install driver from specific location" and direct it to "C:\util2\drivers\hotkey" folder.

The computer will find the file and install the driver after which point you must restart the computer.

Hope this helps. It took me a while to figure this stuff out on my own so hope it speeds up somebody else's attempt.


Apr 09, 2008 | Panasonic Toughbook CF-51 Notebook

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