Press or press the function key + (It depends on what your hotkey option selected is.) on the keyboard, and then check whether there is a notification of ② on your screen.Note: The hotkeys function may be various based on different models, please refer to the User Manuals. Check the hotkeys location whether there is on your keyboard ①, it located on F6 or F9 key usually.Please try to use the function key (hotkey) to enable/disable the Touchpad function to ensure there is no response on Touchpad due to it is disabled. Please go to the corresponding instruction based on the current Windows operating system on your computer: To provide you more detailed instruction, you can also click ASUS YouTube video link below to know more about How to fix the Touchpad abnormal problems:
Please refer to the troubleshooting steps in this article. You might experience the problem that the Touchpad is insensitive / invalid click / not working, etc.
Troubleshooting - Touchpad abnormal problems