[any ANONYMOUS forum user]

I have this exact same problem on two laptops upgraded from XP to Windows 7. I tried to "Show Disabled Devices", but the stereo mix is still not shown - in fact nothing than what was already there is shown (two Microphones High Definition Audio Devices and a Line In High Definition Audio Device).

Both of my upgraded laptops show the only available input source as "Master Volume" in my sound recording software (which is Windows 7 capable - although I have downloaded 4 other sound recording programs to determine that it is not an application error but a Windows 7 one). In XP I had the following available input sources from exactly the same sound cards : CD Player, Line In, Microphone, Mono Out, Phone, Wave Out Mix.

Any ideas what the problem might be ?