Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I experienced this week that the keys F1 - F12 isn't functioning any more in any application. I can't think of any big changes I did to the computer that would cause this.

There was some Windows Updates, but I think it was there before that and none of the updates said to be related to the keyboard.

I have rebooted several times while trying to work out what's causing it.

The keyboard is a wireless full size Microsoft keyboard for a desktop computer running Windows 7 64bit.

I'm wondering if there's an application that's claimed the keys for some functions. (All though - nothing appear to work when pressed.)

Any tools to diagnose keyboard issues like this? Inspect global shortcuts?

Something that would be quicker and easier than disabling all statup apps and enablind them one by one (that will just take a very long time.)

share|improve this question
add comment

3 Answers

up vote 4 down vote accepted

Most newer microsoft keyboards have a function lock button and by default have the function keys used for multimedia keys. Does your keyboard have such a button? If so, you just need to push the function lock button.

share|improve this answer
    
@thomthron this is probably the most likely problem. –  ekaj Sep 16 '12 at 19:19
    
Some laptops have a key that determines whether the top row of keys act as function keys or the normal top row of a querty keyboard. Make sure that hasn't been toggled... –  martineau Sep 16 '12 at 19:20
    
Ah! Yes! I never noticed that! An "F Lock" button to the right of the F12 button. I never use the F-keys that's that far up. I do feel silly now for not seeing that. I never cared for extra function keys on keyboards except multimedia keys. In fact, I searched a long time to find a full keyboard where they keys where not moved about with a set of multimedia keys to control audio. Ignored the optional behaviour of the F-keys which I really only thought of as a laptop thing. All it good now - nothing to see here. Thanks for your swift response. –  thomthom Sep 16 '12 at 19:27
add comment

Do they function outside of Windows? Can you cold boot the computer and hit F1, or whichever, key to go into BIOS?

Try booting off a Linux livecd and see if the problem still occurs. If they do, then you know the problem is hardware related.

share|improve this answer
add comment

Does your keboard have an fn button? if so, try fn+F4, etc.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.