In this instance, I’m using a Windows 10 laptop with a precision touchpad. Here’s how to turn off the touchpad:
Disable the toggle switch under Touchpad.
Note: To turn on the touchpad, simply activate the toggle switch.
Search F1-F12 for the touchpad icon.
As soon as you find it, press both the Function key and the button you find (in my case, it’s F9) simultaneously.
Note: Press the same key combination to enable the touchpad.
Find and expand “Mice and other pointing devices.”
Right-click on the entry that belongs to the touchpad. Disable it.
Note: In order to enable the touchpad, you must enable the above entry.
In the BIOS settings of your laptop, look for the “Internal Pointing Device” option or something similar with respect to the touchpad.
Save your BIOS settings after disabling that option.
Note: To enable the touchpad, you must activate it.
Go to HKEY_CURRENT_USER > Software > Microsoft > Windows > CurrentVersion > PrecisionTouchPad > Status.
In the right pane, you can see Enabled DWORD. Double-click it.
Provide 1 (to enable) or 0 (to disable) in the Value data field.
Hit the OK button.
Restart your PC.