This article was previously published under Q147797
If all pertinent network adapter registry entries are not deleted after youremove a network adapter in the Network tool in Control Panel, the following errormessage appears:
Component configuration option value missing in registry.
The following system event appears in Event Viewer:
Event ID: 7000 Description: A device attached to the system is not functioning.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore 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
To correct this problem, do the following in the registry:
Start Registry Editor (REGEDT32.EXE) and locate the following registry subkeys in the HKEY_LOCAL_MACHINE subtree, where number is the number of any network adapter that appears in the Installed Adapter Cards section in the Network tool in Control Panel: