For anyone coming here from Google, try either:
Unplug any external mouse and reboot.
Go to Device Manager.
Right click the only device under "Mice and other pointing devices" > "Update Driver" > "Browse my computer for drivers" > "Let me pick..." > "HID-compliant mouse" > "Next".
Then right click "ASUS Precision Touchpad" under "Human Interface Devices" > "Update Driver" > "Browse my computer for drivers" > "Let me pick..." > "HID-compliant touch pad" > "Next".
More hacky but easier to revert. But you can't use the numpad on external keyboards and the "Num LK" corner still doesn't capture your finger.
Put this in an AHK script:
SetNumLockState , AlwaysOff
You can compile it as an exe and put it in your startup folder.
source: https://www.reddit.com/r/ASUS/comments/ilsgo0/support_how_to_turn_off_numberpad_on_touchpad/