Anyone know how to fix a pci device unknow message

Hi I just buy a new PCI 66 scsi smart array 5300 compaq card, and when I instaled it on an ML350 on the slot pci 66 doesn't works, on bios say unknow pci device, i put it on another ml 330 server and it's the same, finally i tested it on an ML530 server wi�hich has one of that kind of card and it says pretty much the same, this is the second smart array 5300 that the provider give me, and didn't work any idea?? thx a lot