i have a problem .When I go to windows sonic it doesn't show me the box to check 7.1 .. I dont have that box and my headphones support 7.1 surround (my headphones http://www.marvo-tech.hk/index.php?c=content&a=show&id=300 ).I reinstall audio driver unplug and replug the headphones but nothing .. Any solution ?
View: https://imgur.com/a/BWld41K