If the Caps Lock key functionality is reversed, you can reset the Caps lock key using Microsoft Word. Here are some other working fixes that will help.

Lay the key on a sticky note or piece of paper. Write the door the key unlocks on the paper. Take a picture of the key on the label. You can create a photo album on your phone with all the pictures, ...

How to Fix Sticky Keys and Double Presses on Your MacBook Keyboard It's not a new problem, but sticky keys and double taps still plague us.