HP Laptop mute button stuck after installing Zorin OS Core

Also, the OS says that whenever I click the mute/unmute button, that it does mute/unmute but the button is always red whenever i click it (which means it's muted even though the OS says it isn't muted) and no sound, whatever I try. Could someone help me with this, please?

A very old Ubuntu thread which may help (or hinder):

It could also be as a result of a kernel bug:

https://bugzilla.kernel.org/show_bug.cgi?id=195827