Microsoft KB Archive/929461

= The CD drive or the DVD drive does not work as expected on a computer that you upgraded to Windows Vista =

Article ID: 929461

Article Last Modified on 1/4/2008

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APPLIES TO


 * Windows Vista Business
 * Windows Vista Enterprise
 * Windows Vista Home Basic
 * Windows Vista Home Premium
 * Windows Vista Ultimate
 * Windows Vista Enterprise 64-bit Edition
 * Windows Vista Home Basic 64-bit Edition
 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Starter

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows XP and Windows Vista



SYMPTOMS
You upgrade a computer to Windows Vista or you install or uninstall applications that have a CD/DVD filter driver. When you restart the computer, the CD drive or the DVD drive no longer works as expected.



CAUSE
This problem may occur if one of the following scenarios is true:
 * The filter drivers in the CD and the DVD storage stack are not migrated successfully to Windows Vista.
 * You uninstalled CD software that fails to properly remove itself in the registry.
 * You installed software that adds filter drivers in the CD and the DVD storage stack that interfere with existing filters.



RESOLUTION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To resolve this problem, remove the affected filter drivers. To do this, follow these steps:  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. 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. In the right pane, right-click UpperFilters, and then click Delete. Click Yes to confirm the removal of the UpperFilters registry entry. In the right pane, right-click LowerFilters, and then click Delete. Click Yes to confirm the removal of the LowerFilters registry entry.</li> Exit Registry Editor, and then restart the computer.</li></ol>

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:

65416 Hardware and software vendor contact information, A-K

60781 Hardware and software vendor contact information, L-P

60782 Hardware and software vendor contact information, Q-Z

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MORE INFORMATION
For more information about the filter drivers that may be loaded in Windows Vista, run the DevCon program. To do this, follow these steps: <ol> 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 The DevCon command-line utility functions as an alternative to Device Manager

</li> 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.</li> At the command prompt, change the directory to the directory to which you extracted the DevCon files.</li> Type devcon stack gencdrom, and then press ENTER.</li></ol>

Then, information that resembles the following appears:

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

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