Here you can learn more about How to download and install the ASUS System Control Interface driver. Note: If the function key is not working, please try reinstalling the ASUS System Control Interface driver. 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.