Disables the Internal (PC) speaker
CONFIG_DISABLE_PC_SPEAKER
  Whenever you don't want your computer to be able to beep, 
  choose this option. Actually, choosing this will still not
  disable the speaker, you have to use sysctl for this:

     echo 0 > /proc/sys/kernel/pcspeaker # disable speaker
     
     echo 1 > /proc/sys/kernel/pcspeaker # enable speaker (default)

  Attention: This will not catch the beeps made directly by the
  BIOS (mostly this happens when using a notebook and pressing 
  special key codes). To disable this "BIOS-beep" enter the
  BIOS and change it there.

  If you are unsure, say N to this.