hello!
a small doubt......when ever u start a pc u get a beep sound from the speaker inside the cabinet ...the sound tells us that the system is perfect and the components are installed properly..if not the beep sound will increase the duration..so till this its ok ...now how does the speaker know that the components are perfectly installed...who checks the perfection of the system and who sends the message to the speaker.to give the beep sound...please give the answer as quickly as u can....