test mother board with pci post card

hii,, i’m want to ask about how to learn read bios code,cause in my work area i’m test mother board use pci post card.as like we now if pci post card have digital number,and from that number we can now where area in trouble,i have visit essupport.com from there i get bios vendor and some information,for that i’m want a sollution from you how to test a mother board with pci postcard,thank’s with your help