I have a hp pavilion with windows vista, downloaded mathematica, and just\nkeep getting an annoying beep when i click on something. When i click on\nrandom things it will beep really loud, sounds like its from the speakers\nbecause when i mute them it wont play, but otherwise it will. I have all the\nsounds associated with it turned off, and it doesn't sound like any windows\nsound. Any ideas on what it could be and how to turn it off? I tried\nediting the registry like\n[URL]http://channel9.msdn.com/ShowPost.aspx?PostID=333197[/URL] says to, but each\nproperty was already set to " ".