Enter the bios. Open your manual to page 35. Make sure the onboard audio is set to, [Enabled]. Also go over page 5 and read item 6. Link to Foxconn;
You must copy and past this link into you're browser.
The = is not recognized.
http://www.foxconnsupport.com/download.aspx?models=en-us0000201&category=C000000001&Series=en-us0000002&keywords=&sort=

Cheers'
Mike