If your keyboard is not working, and turning it off and on doesn't work, and rebooting your computer doesn't work, and you're sure it's not the batteries, just try pushing the buttons especially the all can control key several times and see if that helps; a key may get stuck in the down position you may not even realize it.

Become a supporter of this podcast: https://www.spreaker.com/podcast/random-tech-thoughts--2829929/support.