windows 10 product key is stored on BIOS, so you don't need it, it will be read by windows installation automatically.
to re-install windows 10 - factory reset, you can use Acer care center or pressing Alt+F10 keys at boot.
windows 10 product key is stored on BIOS, so you don't need it, it will be read by windows installation automatically.
to re-install windows 10 - factory reset, you can use Acer care center or pressing Alt+F10 keys at boot.