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Filed Under: Registry Tweaks   

There have been reports of CD or DVD drives that have disappeared on Windows XP based computers after a program installation or a Windows upgrade. In some cases, the CD or DVD drives disappeared for no obvious reason.

If you find yourself in such a situation, take heart. This registry tweak for Windows XP based computers restores missing drives after a quick restart.

Be sure to make a back-up of your current registry settings though. A back-up provides you with a means to restore your registry to the original settings should any issues arise.

To restore your missing CD or DVD drive:

  1. Click Start and go to Run. Now enter regedit.
  2. Locate HKEY_LOCAL_MACHINE on the left side of your registry editor.
  3. Once you’ve found the folder, expand it by clicking on the cross on the left side of the folder.
  4. Go to SYSTEM. Expand the SYSTEM folder.
  5. This will take you to CurrentControlSet. Expand this folder.
  6. Look for Control. Expand Control.
  7. Now go to the Class folder. Expand this folder.
  8. Look for {4D36E965-E325-11CE-BFC1-08002BE10318}. Be careful. Make sure that you have the correct sub-key, as long numbers and letters can be confusing.
  9. Look at the right hand side of the box. Look for UpperFilters.
  10. Double click on UpperFilters. A new box will pop up.
  11. Delete the value data in UpperFilters. Be sure that you are deleting Value Data and not the key or mutli string values. Click OK.
  12. Look at the right hand side again. This time look for LowerFilters.
  13. Double click LowerFilters and delete the Value Data. Again, delete the value data and not the key or multi string values. Click OK.
  14. Exit the registry and reboot.

Additional Recommendations...

Driver Update: Many errors are related to driver problems such as obsolete, outdated or incompatible drivers. A driver update tool is recommended to scan your system for corrupted and outdated drivers and to ensure that all your drivers stay up-to-date.