HP Notebook PC Reference Manual page 19

The keyboard status lights, located above the keyboard, indicate the states of the
keyboard locks.
1. Caps Lock. Caps Lock is active.
2. Num Lock. Num Lock is active. (The Keypad Lock must also be on to use the
embedded keypad.)
3. Keypad Lock. The embedded keypad is active (Fn+F8). Num Lock must also be on
for the numeric keys—otherwise, cursor control is active (as marked on an external
keyboard).
4. Scroll Lock. Scroll Lock is active.
Getting Started with Your HP Notebook
Identifying Parts of the Computer
Reference Guide 19