Windows 7 Broadband Dial 651 error problem analysis

Failure phenomenon:

When the machine is connected to the sky Wing broadband, the dial prompts 651 error, and the other computers in the home can use the broadband connection normally.

1, check the local connection status, right click on the lower right corner of the connection icon "open Network and Sharing Center" click on the Left "Change adapter settings";
2, if the local connection is disconnected, dialing error will also be 651. Performance is a local connection (wired Ethernet connection) Red Fork.

The cause is generally the network cable did not connect well, the modem did not add electricity or modem bad, network cable crystal Head broken, network card is broken (repair). These will take one by one to troubleshoot.
3, if the local connection state is limited, error also return 651.
Right-click the local connection to enable it.

4, if there is no local connection, in accordance with the diagnosis of no local connection ideas.
First consider the installation of the new system does not have a network card driver, verify the Device Manager whether there are network card devices, service network Connections,plug and Play,remote procedure call (RPC) and so on are all in the open state.

Solution:

1. View the user's machine Device Manager, such as the discovery of driver exceptions, to help users uninstall the network card driver, and then reset the network card driver after reboot.
2. Change the permissions of the C:WINDOWS/SYSTEM32/LOGFILES/WMI in the system to administrator privileges.
3. Manually set the network card properties, into the Device Manager, right click on the network card driver, select "Advanced"---"Speed and duplex" for "100M full Duplex"
Then it is recommended to shut down the computer, turn off the cat after 10 seconds, restart the computer, connect to the broadband again, and connect normally.

Summary:
651 error causes many for network connection hardware device or drive abnormal cause, should according to the actual situation to carry on the investigation, according to the above steps fast localization discovers the reason solves the problem.