Way back in the first years of the 00's, working IT support in college, BIOS passwords were common (though not mandatory) on the Faculty/Staff desktops. So, forgetting passwords was common as well, and at the time we could reset them by opening them up and swapping a jumper to another set of pins. It struck me as fairly useless to have a BIOS password at the time.

Forever after, on bootup, "Warning! Case has been opened!" would flash up on the screen. I assumed that was for warranty purposes, but our IT department was certified for repairs so it didn't really matter.