Hi BobHep,
1. When was the last time it was working fine?
2. Do you have any third party CD\DVD burning software installed on the computer?
Method 1
Refer the below Microsoft article and run the fix it tool available.
Your CD drive or DVD drive is missing or is not recognized by Windows or other programs
http://support.microsoft.com/kb/982116
Method 2
If the above step fails then check in the device manager if the CD drive is working fine.
a) Open Device Manager by clicking the Start button
b) Click Control Panel, click System and Security, and then, under System, click Device Manager. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Hope this helps!
Halima S - Microsoft Support.
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