Ha ha ha :)
My PC suddenly developed a ~1 second beep, which I had to silence by
muting the sound.
I Googled 'one second beep, got really worried !
I suddenly realized that the sound is that what occurs when one of my
two cats walks on the Keyboard.
GER-ORF there I says!
No I won't says the cat (She's a big B&W cat).
Anyway, I recovered my Keyboard and all is now well.