When you open the Network and Dial-up Connections folder, your Local Area Connection and dial-up connection icons may not be visible, although networking continues to function correctly. The only icon in the folder is the Make New Connection icon.
This behavior can occur if the following registry key or one of its subkeys has been deleted or changed to an invalid value:
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