Open Software Solutions

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To resolve this problem, remove the affected filter drivers. To do this, follow these steps:

1.	Click Start, type regedit in the Start Search box, and then click regedit in the Programs list. If you are prompted for an administrator password or confirmation, type your password, or click Continue.
2.	Locate, and then click the following registry subkey: HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Control Class {4D36E965-E325-11CE-BFC1-08002BE10318} Caution There can be many instances of the registry subkey that is mentioned in step 2. You must make sure that you are in the appropriate registry subkey before modifying the UpperFilters and the LowerFilters values. To verify that you are in the appropriate registry subkey, make sure that the Default data value is DVD/CD-ROM and the Class data value is CDROM.
3.	In the right pane, right-click UpperFilters, and then click Delete.
4.	Click Yes to confirm the removal of the UpperFilters registry entry.
5.	In the right pane, right-click LowerFilters, and then click Delete.
6.	Click Yes to confirm the removal of the LowerFilters registry entry.
7.	Exit Registry Editor, and then restart the computer.

Note After you remove the UpperFilters registry entry and the LowerFilters registry entry, you may lose functionality in certain programs such as CD recording programs. In this scenario, you must reinstall any affected programs. If the problem recurs, contact the program vendor to determine whether an update is available for the program.

For information about how to contact computer software vendors, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:

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1.	Obtain and extract the DevCon program. For more information about how to obtain this program and about how to use this program, click the following article number to view the article in the Microsoft Knowledge Base: 311272 (/Feedback.aspx?kbNumber=311272/) The DevCon command-line utility functions as an alternative to Device Manager
2.	Click Start, type cmd in the Start Search box, right-click cmd in the Programs list, and then click Run as administrator. If you are prompted for an administrator password or confirmation, type your password, or click Continue.
3.	At the command prompt, change the directory to the directory to which you extracted the DevCon files.
4.	Type devcon stack gencdrom, and then press ENTER.

Then, information that resembles the following appears:

IDE CDROM<name>_____CDRW121032______1.08 5&60546BC&0&0.0.0    Name: <name>     CDRW121032    Setup Class: {4D36E965-E325-11CE-BFC1-08002BE10318} CDROM    Upper filters:        <driver name>    Controlling service:        cdrom    Lower filters:        <driver name>1 matching device(s) found.

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