The NmLk key is located on the top, right hand side of the keyboard. Sometimes it is on the same key as F8, F7, or Insert. Press Fn+F8, F7, or Insert to enable/disable numlock.

Its location can vary wildly by laptop manufacturer, but it is usually located in the upper-right corner of the keyboard. Look for a small key that says some variation of "Num Lock," "NumLk," or even a small lock symbol with a number 1 inside.

Short for numeric lock or number lock, the Num key, Num Lock, or Num Lk key is on the top-left corner of a keyboard's numeric keypad. The Num Lock key enables and disables the numeric pad.

All laptops should have a Caps Lock key, usually between the Tab and Shift keys on the left side of the keyboard. Press that key to toggle the Caps Lock functionality. Laptops with a numeric keypad have a Num Lock key on the top row of the numeric keypad.

If your laptop has numeric pad capabilities, the NumLock key will be found on the F7, F8, or Insert key. It may be labeled "NmLk," and written in a different color below the normal key function. On laptops with a dedicated numeric pad (15 inch+), the dedicated NumLock key can be found next to ← Backspace.