I tried all drivers on the web site but my audio driver INTEL82801AA AC97 audio driver is not working .please help

Support Information:
Device Type: BIOS / Motherboard
Manufacturer: Mercury™
Model: KOB810 FCST
Interface: Other
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=1177&qa5=1&qa7=1500&dp=3&qm0=KOB810+FCST&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Mercury%99+BIOS+%2F+Motherboard++KOB810+FCST+Win dows+XP+Professional+) | Research manufacturer Mercury™ (http://members.driverguide.com/index.php?action=getinfo&companyid=1177)

Your audio chipset is not Intel 82801AA, it's Realtek.

This is the Mercury page (www.mercury-pc.com/downloads_list.php?productid=55) with driver links for all hardware on this motherboard, but there is a problem with the Realtek audio driver download link.... it doesn't work. So your task is to examine the mb and determine the Realtek chip number. It's a very small black square or rectangular chip and may require a light and magnifying glass to read. Once you determine the Realtek number, visit the Realtek website (www.realtek.com.tw/downloads/) to see if they have a driver posted.