Function Keys on Keyboard not Working

Q. My function keys (such as F2, F5, etc.) are not working as they normally do in Agvance. What can cause this?

A.  On some keyboards, the function keys can perform multiple tasks. To prevent users from accidentally using one of these functions, there is a function key lock, which turns the function keys off and on. If the function key lock is turned on, the function keys will not work.