You can no longer access the CD drive or the DVD drive, or you receive an error message after you remove a CD recording program or a DVD recording program in Windows XP: "error code 31"

Here is What to do.

You need to remove the upper and lower filters of your cd reg key.

1. Start > Run.

2. regedit

3. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class in the Registry Editor dialog box and select the {4D36E965-E325-11CE-BFC1-08002BE10318} key, which appears as a folder.

4. Select File > Export

5. save the file to the Desktop in case you need to restore it

6. In the right panel of the Registry Editor, select the LowerFilters line, and then choose Edit > Delete. Click Yes in the Confirm Key Delete dialog box.

7. Do the same for the UpperFilters line

8. Close the Registry Editor.

9. Restart Windows.

Done.