Although annoying, error 651 is a relatively minor problem and shouldn’t cause a computer to shut down, restart, or display the blue screen of death.
Causes of a Connection Failed With Error 651 Error
Error 651 indicates that an attempt at a connection to the internet was unsuccessful, or an existing connection has been terminated. A variety of issues can trigger the alert, from incorrect placement of an SYS file, erroneous modem setup, corrupted registry files, an IP address conflict, and driver problems to issues with your internet provider.
How to Fix a Connection Failed With Error 651 Error
Given the number of issues that can cause the Error 651 message, there are many approaches you can take to solve the problem. Here are a few things to try. If you can connect another device to the same Wi-Fi network, the problem lies with the computer. If you can’t connect anything else to the same network, the modem, router, or provider is the problem. This command resets the Windows networking stack. This command disables autotuning. This command re-registers the raspppoe.sys file. Restart the computer, and check the connection.
