My Computer doesnt see or have the option to add new hardware (DVD/CD-ROM)

The computer has two hard drives both in one controller. In the other controller i have put the DVD-ROM but it doesnt recognise it at all. It doesnt see it first of all, and when i try to manually add it ( by going to the control panel and selecting add hardware) there is no option for DVD/CD rom so im out of ideas. Any clues as to what is going on or what i can do?