Caps Lock is stuck on - can't log in

Does anyone have any ideas on how to unlock Caps Lock key that is stuck on/frozen? I can't enter my password to login to my iMac. I am using a standard wired keyboard and cannot get the caps lock to unlock no matter how many times I restart, unplug, plug the keyboard. I have tried to use my wireless keyboard but the computer is not linking to it.

I really hope that there is something I can do, other than buy yet another keyboard.

Thank you for any advice that any of you may have.

Maria