I can't disable the touchpad clicking Fn + Esc.Icon on system tray also disappeared.
Downloaded and installed the driver again but it did not help (Input_Driver_70X31_WN_11.3.15.4_A03).
All other Fn keys are working (like airplane mode, sleep, brightness, etc.).
When I go to Control Panel > Mouse and click the link, device crash error appear. I uninstalled the driver and now this option has also gone from mouse.
After all, the touchpad is working but I can't disable it.