"Turn off the touchpad
Most HP notebooks come with an on/off button near the touchpad. If
you do not wish to use the touchpad at this time, press this button.
Remember to press it again when you wish to use this accessory once
If the notebook does not have an on/off button for the touchpad, and
you wish to turn the touchpad off, open the Mouse Properties window,
select the Device Settings tab, and click the Disable button. You
may re-enable the touchpad from here at any point. "