You begin searching for drivers for your hardware. Microsoft doesn't do this for you. It's the same story as from 1995 to today. Nothing has changed. YOU go get these. I know it's hard but your PC is different from almost everyone's else so you get to find the new drivers.
Please help me .. Recently I upgrated to windows 10. I had a problem with cortana & start menu button so I download Start8.. (I still have problem with the cortana and other microsoft services). Before I upgrade to win10 I used to make videos on Premier pro and I used the Stero Mix as the only enabled recording device. Today I started to make a new video BUT when I open audacity it saws me this message: http://i.imgur.com/Xk6gT8N.png
After that I go to Recording devices and discovered that there isn't any Stereo Mix available in the options! http://i.imgur.com/deyvdyh.png
I need it what I should do????? Sorry for bad english