Increase the volume label, from your head fone if the system have.
If there is no sound install the audio driver ,
You can download the driversfrom ASUS WEB site. http://usa.asus.com/index.aspx
So please go there website
For download copy bellow thelink and paste on address bar.
Suppose, you need driver for, ASUS K8V-VM
Product =Mother Board
So Series= (Socket NO.eg. 754 etc.)
So Model= (Model no will be K8v-vm)
And please select the O.S
(XP / VISTA/ WINDOWS 7) version of the drivers that matches your P.C and search.
Now you can download easilyone after one. after download all the driver ,unzip the fie with winrar or zip.
Download the winrar free,
copy the link and paste onaddress bar.
Install it .
Now right click on everydownloaded file and select EXTRACRT TO THE FILE FOR......,then create a newfolder with the with the driver file, you can install easily.
Hope this helps.