You can try disabling the kernel module that is responsible for creating the beeps. Just edit the file /etc/modprobe.d/blacklist.conf and add the lines
blacklist pcspkr
blacklist snd_pcsp
If you save the file and reboot your PC should not beep any more. Consider that your PC doesn't beep any more at all. This might be what you want, but if not, this is not the right way for you.
You can try disabling the kernel module that is responsible for creating the beeps. Just edit the file
/etc/modprobe.d/blacklist.confand add the linesIf you save the file and reboot your PC should not beep any more. Consider that your PC doesn't beep any more at all. This might be what you want, but if not, this is not the right way for you.