Repair a connection in Windows Vista and Windows Server 2008
Applies To: Windows Server 2008, Windows Server 2008 R2, Windows Server 7
You can use this procedure to attempt to repair a LAN or other connection.
Any user account can be used to complete this procedure. Review the details in "Additional considerations" in this topic.
To repair a LAN or high-speed Internet connection
Right-click the network icon () in the notification area, and then click Diagnose and repair.
Follow the steps in the wizard to correct any error conditions.
Some diagnostic actions, such as resetting your network adapter, might require administrative permissions. Before attempting these actions, ensure that you have the credentials for a user account that is a member of the Administrators group on the local computer.
You can also find the Diagnose and Repair option in the Tasks pane of Network and Sharing Center.
If a red X is displayed on one of the connections in the Network and Sharing Center map, you can click the X to begin the diagnose and repair process.
You can also diagnose a network connection by using the Network Connections folder. Right-click the connection you want, and then click Diagnose.