Are any of these optical drives on the same IDE channel as the hard drive ...if so remove it.
Actually remove both of them. And remove their references in Device Manager. Then select one and set the jumper to Master and hook it up to the end of the ribbon cable that does not have a hard drive on it.
Re-boot. Pause the BIOS screen and see if the CDRom is being picked up by the BIOS...if so hit the spacebar to continue loading setup and Windows.
Now check Device Manager and see if it is listed.