Hi I hope I'll make my question clear... I have a inspiron 6400 with windows XP pro. Windows tend to be using the "system beep" for different action, even if I disabled all the sound in the configuration panel. The system beep I'm referring to is the pretty loud sound it would make if you push too much keys at the same time when windows is not booted for example. It's not coming out of the front speakers but it's is coming for inside the laptop. Since I'm using this laptop in a classroom, I need it to be fully silent. I checked the BIOS and other post, but I didn't find an answer... Anyone knows that? Thanks a billion times!