Re: "unnecessary computer sounds"
I remember when someone in our office discovered the Windows 95 'Robotz' theme. It sounded like the computer had a terrible case of indigestion.
Then a few years later we all became terribly familiar with the Windows XP setup music, because when it was being installed on a laptop the volume keys couldn't be used to mute it.
(Relevant Dilbert: https://dilbert.com/strip/1994-12-27 )