Toucpad is very important as it is widely  used in laptops. There are issues with certain Acer E series using Windows 10 which the touchpad does not work properly. Her is how to fix it: 1. First install Intel Serial IO chipset driver for Windows 8 or Windows 8.1 from acer download center. You can also use the driver below (direct link form acer). Windows 8 : Download (This is from s series)