Well it seems I spoke too soon, my stuttering and popping in Windows 7 returned today.
So I opened this thread to review and went to Sound shortcut on the desktop.
Somehow trying to switch between audio devices, I may have deleted something.
Now, on both "Playback" and "Recording" tabs, it says: "No audio devices installed".
Thinking it can't be so easy to delete a critical device, I have rebooted, disabled and enabled anything I could see in Device Manager, but now, nothing - no sound at all.
A quick Google for "no audio devices installed" reveals I am not the first, but weird and wacky suggestions re the BIOS and/or reinstalling Windows and I am in no mood for that.
Can anyone please tell me how to restore the audio - or even better, install more of an audiophile set up as a default?
Thank you.