Try re-installing the Realtek audio driver? Uninstall it from the device manger, delete the driver box ticked. Then reboot and get Windows to find and install the new driver.
Hey, Chris G.!
Sorry for the delay to reply.
I just did exactly what you said, following these steps, and although I tried it several times, the problem remained! The only thing that I was unable to do was to delete the driver, because there was no box to mark that option (please, take a look at the attached pictures).
That is really weird, because when I play any sound that I tried to record using the inbuilt microphone, I can only hear that static noise. As showed in the picture attached in my initial post (Microphone-issue.png), the inbuilt microphone (Realtek High Definition Audio) displays only one green bar of volume level. The same Realtek High Definition Audio device only works normally if I insert an external microphone (like a smartphone earphone/microphone).
Any idea about how to solve this problem?
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