Microsoft Drivers Only Support 5.1 Or 7.1 From Source ,The Source Must Be 5.1 or 7.1 , No More Speaker Fill , In Drivers , Microsoft Think Ever One Uses Head Phones Not 5,1 or 7.1 Speakers , Audio Is Weakest Link In W10 , No Where In W10 Microsoft Drivers Is There Any 5.1 Or 7.1 Code ,