After latest Windows 10 update (https://support.microsoft.com/en-us/topic/may-11-2021-kb5003173-os-builds-19041-985-19042-985-and-19043-985-2824ace2-eabe-4c3c-8a49-06e249f52527) I cannot see any input devices.

Microsoft Windows 10 Pro (x64) v10.0.19042

Dell Update tool reports: Audio driver is "Realtek(R) Audio 6.0.8984.1" but I also see "Realtek(R) Audio 6.0.9147.1" in Programs and Features.

When I download and install "Realtek-High-Definition-Audio-Driver_6CCVY_WIN_6.0.9147.1_A18.EXE" Windows cannot start (no boot issue but OS doesn't start, I've waited 30 minutes) hence I had to reset my PC to before Windows update, then microphone was there. 

Then I've updated the Realtek driver again and have the same issue, OS doesn't start.

I reset my PC to factory settings, installed OS and everything from scratch, microphone was working, installed all the windows updates and again I see no input device.

Also tried Support Assist, but it doesn't see the device:

All I can find on internet is "try to reboot your pc, uninstall & install audio the driver (which makes my pc unusable), give permission to mic. on windows settings, find the device on device manager" etc. which none of them works for me.

Appreciate for any help.