USB mic problem

This isn’t specifically a problem with Audacity, but I’m trying to get help anywhere I can.

I think this started after the Win 10 Anniversary Update.

After a system boot, my webcam mic shows up as the default mic, and enabled, but it doesn’t pic up any sound. If I try to record with Audacity, it doesn’t even start recording.
I can get it working by disabling, then re-enabling the mic. Then it works until the next reboot, but sometimes it will work. I’ve tried switching between the Microsoft drivers, and the Logitech drivers. Both work and fail intermittently at boot.

As I said, this isn’t limited to Audacity (where I wouldn’t be using the webcam mic anyway). It’s a problem before the audio goes to any app.

Does this post help: https://forum.audacityteam.org/viewtopic.php?f=46&t=100117

thanks you very much