NIC card loosing settings after reboot

Hi,
A client called and said they needed a new network card because they could not log into their domain. I went and swapped out the card and it worked. I decided to add a UPS and shutdown. When I rebooted it lost settings again. I suspected a possible surge because 4 other computers have lost hard drives. This time I took the old NIC I thought was blown and put it back in and it worked. So it seems that it is loosing the settings after a rebooot.