Notebook Audio

Hallo, I've bought a Laptop HP ENVY - 17-cg0002nl on hp Italian web store. The embedded microphone of my laptop (Intel microphone array) worked fine before updating to windows 10 2004, then, after some weeks, it stopped working. It is not "seen" by many apps, like Skype and Windows sound recorder. I've done many attempts to repair it:
1) I run the windows troubleshooting utility and it said that the audio services do not respond, but actually windows audio service is running, (and the speakers work perfectly)
2) I uninstalled the microphone form windows device manager and then I restarted, but it did not work,
3) I updated the midcrophone driver
4) I updated windows to 20H2 version, but it did not work,
5) I run the fast test of HP hardware diagnostic, but it says to me that there is no problem,
6) I run hp audio diagnostic, but it says there is no problem, but the microphone still does not work,
7) I downloaded Realtek audio driver from hp support page of Laptop HP ENVY - 17-cg0002nl, but I could not install on my pc because it says that my windows version (the latest one, 20h2), is incompatible).
What can I do to repair the microphone, possibly avoiding a hard reset? Or, at least, what can I do to know why actually the microphone is not working (all the troubleshooting attemps gave contradictory results)?
Thanks in advance for your help