If you are having sound is not working problem on your asus laptop. It could be due to the several possible reasons. So you should check the following settings.
After following follow these instructions, if your router driver is still not working. You should go ahead and factory restore the pc to the default date. When sound on your computer was working fine. It will automatically resolve the problem. Somehow, if you still deal with the same problem, you need to visit: Advance guide to fix asus laptop no sound problem