OK, first I'm no tech. I am a "hit that button and see what happens" kind of tech. ;) But if the beeping continues, I'd check the keyboard. If a key is stuck, that will cause a beeping too. If you are still having a problem, try a different key board. ;)
If it's a software problem, one can always reinstall everything. If hardware, and not the keyboard, then I dunno.
If all else fails, there's always the 9-stories solution.
Take the computer up to the 9th floor, open the window, and throw it out.
(Cacher) Gardez votre boîte au lettres propre en Archivant les messages importants et en utilisant régulièrement l'option Effacer Tous Les Messages. (pauloaguia) (Montrer toutes les astuces)