What is the problem with Vista not being able to access the Internet

A lot of people encounter Vista
after startup, the network can not be used, the network connection shows that the connection status is unknown, and the dependent service or group cannot be started.

The icon of the network connection after plugging in the Internet cable is still a small red fork

Display:

Connection status: Unknown

Dependent service or rent cannot start
>

Change to other network cable is not OK, restart is invalid, change the router interface is still invalid

Answer:

In fact, many times this is because your TCPIP.sys file is modified and caused an error. As a result, just restore the tcpip.sys file to solve.

tcpip.sys is located at x:\\winodws\\system32\\drivers\\tcpip.sys (x is your system drive letter, usually C)