Hp Chromebook 14 model Butterfly No touch pad working

HP Pavilion Chromebook butterfly touch pad not working. I had reinstalled window 10 Pro 64 bits. even I am Installed all touchpad driver from “Driver Master Pack” but not successful . please help me

Coolstar.org - Butterfly Drivers

Then install remaining drivers (Unknown Drivers) from Windows Update control panel
watch your Device Manager to make sure they start getting installed and none are left in (Unknown Drivers)
If missing you can try manually searching Device IDs on Microsoft Update Catalog and use 7zip to open the .cab files and install the .inf files manually.

Which driver CAB you are asking?