I had done a complete reset of the laptop, installed Windows 10 and ran into this problem, I reloaded all the drivers from the Acer site and it didn’t fix it. It was a BIOS issues - restart the computer and hit F2 when the logo appears to access the BIOS menus, go to Main and the Touchpad setting, it seems to default to “Advanced” and when I selected [Basic] and rebooted it is working again!