Computer not finding cd/dvd rom drive

found this computer it works fine but the computer wont find the cd/dvd rom please help!!!:sad:

Hi and Welcome!

are there any error indicators in Device Manager (assuming you are using Windows)?
Does the drive show up in Bios during startup?
Can you run a bootable CD or DVD?

Perhaps you can give us some more information about that computer, including warranty coverage (just in case there is something wrong with the hardware).