I tried to setup a external cd-rom write drive and it
failed. This resulted in the system not recognizing my
existing Cdrom drive.

It shows in my hardware panel but it doesn't map to a
drive nor is it recognized by the operating system.

Depending on what all you did this may be the repair.
Cannot Access CD-ROM and "Code 31" Error Message in Device Manager After
You Remove Adaptec Easy CD Creator from Your Computer
http://support.microsoft.com/default...b;en-us;270008

rmcleanas@hotmail wrote:

> I tried to setup a external cd-rom write drive and it
> failed. This resulted in the system not recognizing my
> existing Cdrom drive.
>
> It shows in my hardware panel but it doesn't map to a
> drive nor is it recognized by the operating system.
>