Thread:50.187.199.118/@comment-35357669-20140603062257

If you have Windows then go to Start, Programs, Accessories, Accessibility, On-Screen Keyboard. Just click on the Caps Lock key on that and it will turn it off.

An alternitive is to pop the key out itself and clean under it and see what the cause is, dont use water or any kind of liquid, ask someone else for help if any is needed 