Cannot disable 7.1 Surround

[techking1011]

For the life of me, I cannot work out how to change the parameters from 7.1 Surround to Stereo. I have no other option besides 7.1 Surround, what am I missing here?

[Soolo]

Windows Settings

https://answers.microsoft.com/en-us/windows/forum/all/switching-between-stereo-51-and-71-sound-via/c62a1ca9-9822-4257-b3ef-afe0108ac3e0

https://www.windowsphoneinfo.com/threads/speaker-configuration-reverts-to-stereo-upon-reboot-with-workaround.304708/