- The number keys on the right are controlled by the Num Lock key, which is located at the top left of these keys.
- The number keys will work when Num Lock is turned on. There should be three lights, normally found above the number keys on the keyboard; the Num Lock key's light normally has a '1' above it.
- Press the Num Lock key - one of the lights will turn on or off. When Num Key is off, the number keys will be used to scroll up and down the page.