If in your Windows Vista or XP computer, your CD or DVD drive will not read or write media, then you may want to check out this fix from Microsoft Automated Troubleshooting Services (ATS).

This module Mats_Run.DVD.exe will automatically diagnose and repair problems with your CD or DVD drive when trying to read or burn media ans specifically fixes the following:
- Your CD or DVD Drive does not read or write and is shown as disabled
- The media in your CD or DVD drive cannot be read
- The media cannot be written to by your CD or DVD drive
- You receive one of the following errors: A class specific or device specific driver is missing or corrupt; A CD or DVD drive cannot be found or is not connected; The CD or DVD drive is experiencing a problem that prevents it from working properly; The CD or DVD drive is not accessible via an assigned drive letter.
Visit Microsoft Fix It to download it.
Windows 7 users may want to check this out!
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