Macbook down arrow key not working.
Help, the down arrow key on my MacBook Air has stopped working more or less completely. What can I do to try to fix this?
MacBook Air 13″, macOS 12.6
You could try a can of compressed air used for computers. Perhaps some dust or a crumb has got under the key. Follow the directions on the can.
If that doesn't work take your MacBook into an Apple Store or an Apple Authorized Service Provider as it may need more service than a simple can of air.
Edit: Before you do that restart your Mac. Sometimes that will clear any glitches that may arise.