Although my computer "chirps" when I use the Caps Lock key to change from lower case to caps and vice versa -- I have no other sound at all -- not on booting up, trying to play CDs, trying to play music from music sites, not announding IMs, or mail, etc. I used Norton Utililities WinDoc to try to find and clear the problem to no avail. I still have no sound. Any idea what might be wrong and how to fix it? Thanks.