What does the connection failure error 651 mean?

Error code 651 is one of the phenomena that hinders the error code query of broadband Internet access. The specific manifestation is that the network card light does not light up or keeps flashing.

The 651 prompt is generally caused by the failure of the connection between the user terminal computer and the Netcom central office equipment:

Customer part

Generally, these problems (dial-up software, Network card driver, USB modem driver, computer system, adsl modem itself, lines after entering the home).

Netcom is responsible for the part

Generally, this part is divided into (telephone outside lines, central office equipment, equipment ports).

Solution

Check whether the adsl cat status light is normal. If it is normal, please check the dial-up software, network card driver, and USB mode driver (usually it needs to be reinstalled and the computer must be restarted).

If it is win7, first open the Network and Sharing Center - Change Adapter Settings - Right-click Local Area Connection - Properties - Configuration - Advanced - Speed ​​and Duplex Mode - 100Mbps Full Duplex - OK* - and then restart the computer.

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