Adding RAID to server

Hi,

I have a server that I am adding a RAID that we purchased to. The server works fine. It is running Fedora 7 and is a Dell Precision 690.

When the RAID is attached, it boots up and says the following:

Controller Bus #00, Device#1F, Function#02: 00 Ports
No device found
AHCI BIOS not installed

No boot device available -
strike f1 to retry boot, f2 for setup utility

However, it says that the primary hard drive is not present. Any clue where I should begin with troubleshooting this?

Thanks!