If you have downloaded a driver package as a ZIP file, follow these steps to install it: Acer Iconia W3 driver issues after Windows 8.1 solution
Use Snappy Driver Installer (SDI). Download the “SDI Full” version (approx. 18GB) or the “SDI Lite” (which will download as needed). This tool has saved many W3-810 users. acer iconia w3-810 drivers