I had an Athlon motherboard with voice POST messages… one night I woke up to it saying “your CPU has a problem!” over and over and was freaked out until I was completely awake and figure out what was wrong.
It wasn’t high quality coming through the piezo speaker, but it was good enough.
I work with plenty of people who don’t even do that. They just keep making stuff up like they do… But they’re confident in their incorrect answers, so people listen to them.