Broadband connection error 651 is one of the common fault symptoms when surfing the Internet with a broadband connection, which indicates that there is a problem with the communication line between the computer and the server of the broadband operator, or a problem with the physical connection between the two.
Specifically, broadband connection error 651 can be caused by a client-side issue or a broadband operator issue. Client-side problems may include damaged network card of the user's computer, network card driver not installed, loose or damaged network cable connecting to the computer, damaged ADSL modem (cat), and computer system problems. The problems of broadband operators may involve damage to the ** line, central office equipment, equipment ports, etc.
The ways to resolve broadband connection error 651 include restarting the device, checking the network cables, confirming the username and password, updating the network drivers, recreating the broadband connection, disabling IPv6, checking the firewall settings, and more. If none of the above solves the problem, it is recommended to contact your broadband service provider or network provider in your area for further technical support and troubleshooting.
If you still can't resolve the problem of Error 651 on your broadband connection, it is recommended to consult your broadband operator or professional technician.
Of course, if everything is fine, the easiest solution is to restart your device.