Rank: Guru
Rating: 88%, 4806 votes
it would seems that there is a compatibility issue with the older board.
only thing that might help might be the bios update witch you would need to do manually in dos, by starting up with a windows 98 bootdisk for example.
http://www.bootdisk.com/
you can find the newest bios from here and the utilitys required for dos flashing
http://support.asus.com/download/download.aspx?SLanguage=en-us&model=A7N8X
check the date
Version
C1007
2003/10/09
update
is your current bios the same or older?
If you need more assistance let me know, I'm here to help