A friend of mine has a Compaq Armada 6500 laptop which has a removeable CD ROM drive which goes into a multibay where it can be switched for a floppy drive.

He removed the CD-ROM so he could use the floppy,but the laptop kept asking to put a floppy in the drive ,when there was already one in it.
He then put the CD Drive back in, but the drive no longer shows up in My computer.....it has the floppy drive icon ,but nothing for CDROM.

No cd drive shows up in device manager either.
I had a look in the bios an there is no mention of cd drives.
Does anybody know how the cd drive can be detected?
Thanks.