Davie already told you what needs to be done:
You need to enable the option ROM for the PCI slot the card is fitted in.
Onboard controller and plug-in card do NOT use the same configuration utility. The onboard controller's utility is entered with Ctrl-M, the plug-in card's utility gets started with Ctrl-H (but only if the controller's Option ROM is enabled in mainboard's BIOS, of course).
Only ENABLED Option ROMs will get included into boot options.