Stereo Mix picks up no sound (possibly to do with USB headset)

fireberd said:

Actually, if you are not using HDMI, then Disable both of the NVIDIA entries.

All disabled apart from realtek, still not working :/ I also restarted the pc too.

fireberd said:

Uninstall Realtek in the Device Manager, DO NOT uninstall the drivers. Reboot the PC and when Windows starts it will reinstall Realtek. This "refresh" seems to help a lot of problems.

Still picking up no sound in stereo mix.

fireberd said:

What are you using for the audio source? And what are you using to record?

Anything, system sounds, music using windows media player, games (shadowplay to record games - it has worked before with stereomix).

Using stereomix to record:

fireberd said:

What program are you using to record? Have you tried the free Audacity?

Yeah I use that too, sorry forgot to mention it.

It is definitely set on stereo mix, i play it back and its just a flat line, no sound.

fireberd said:

This is how my Audacity looks. I tried a test recording. I assume you can hear what you want to record on the speakers?

Listening to music through my speakers.

Nothing being detected on stereo mix or audacity.