Suddenly Apple Wired Keyboard not working Suddenly my wired Apple Keyboard isn't working anymore. My MacBook don't recognize the external keyboard, and the keyboard is only two weeks old.

Is the Keyboard physically broken, or is it a software issue?

What can I do to fix it?
This is what solved it for me:


  Eventually I found this thread on the Apple website, and followed the rather bizarre advice of adding a USB extension cable between the keyboard and the Mac (luckily the keyboard comes packaged with one). Bingo! Keyboard fine, mouse plugged into it also fine.


http://www.zigpress.com/2014/12/30/has-your-apple-mac-external-usb-keyboard-stopped-working/