Activate by Phone:::: +1( 877)-514-1396 Windows Activation You should first create an Email Id of Microsoft like outlook or Hotmail and digital try to activate windows 10 see if this helps. Or you can search and download Bios windows product key finder, then go the Microsoft with the recovered Product key and then try to activate Windows 10. Most of the time of its branded PC with pre-installed Windows they have Product keys in the Bios. Or see you can located some on the back or any place which mentions Windows key or refer to the Manual for the same. One more thing while in Microsoft website try to download Windows 10 by installing Windows Medial Installation tool from that site. See if this helps. Or you can contact Acer Customer Care for help.