To use the features shown on the icon printed on one of these keys while this option is enabled, press Fn. Trivial Fixes for Mac Sound Not Working Issue. With this option enabled, the top row of keys will act as standard function keys (F1 - F12) and not perform special functions such as volume control. Here’s a list of such solutions we find effective in troubleshooting Mac’s sound not working issue.
Also, if you need more help, read this detailed guide on how to update Mac. Made sure mouse keys and slow keys is off. I have tried the following solutions: cleaned underneath the keys, in case dust or anything else was preventing them for working. If there are updates available, install them. Hello, my t,y,u,i,o, keys dont work on my Mid 2012 13 inch MacBook Pro.
Mac OS X: How to change the behavior of function keys It’s possible your Mac keyboard isn’t working due to software issues. Please use the following article as a reference and let me know if you need further assistance. Are any of the other functions on the top row (function keys) such as screen dim or brightness (F1 and F2) working? If none of the function keys are reacting to what you would expect them to do, I suggest making sure they are not selected to be used as standard function keys (make sure the box is unchecked).
I understand that the keys for rewind, play, and skip are not functioning on your built in keyboard any longer. Welcome to the Apple Support Communities!