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To fix this problem, delete the UpperFilters registry value and the LowerFilters registry value. These values may cause access problems. To do this, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the UpperFilters registry value. This value is located in the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
3. On the Edit menu, click Delete, and then click OK.
   
   Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey. For more information about how to set or change registry editing permissions, click the following article number to view the article in the Microsoft Knowledge Base:
   310426 How to set or change registry editing permissions in Windows XP or in Windows Server 2003
4. Locate and then click the LowerFilters registry value. This value is located in the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
5. On the Edit menu, click Delete, and then click OK.
   
   Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey. For more information about how to set or change registry editing permissions, click the following article number to view the article in the Microsoft Knowledge Base:
   310426 How to set or change registry editing permissions in Windows XP or in Windows Server 2003
6. Exit Registry Editor.
7. Restart the computer.