The computer cannot connect. What's the matter?

First, the definition of dialing error:

? Error code 678 is one of the broadband fault codes. This means that the remote computer is not responding. Simply put, it is network paralysis. Broadband dial-up Internet access is connected through pppoe protocol. Error prompt 678 indicates that the remote computer is unresponsive, indicating that the computer sends instructions to the network card to send data, including the transmission network cable. When the terminal board port of the local office (computer room) processes the data returned to the computer, it will prompt that there is a problem with data transmission.

Second, the common reasons:

? There are many reasons for the 678 error, such as: equipment problems in the computer room, trunk cables, distribution cables, user network cables, user computer network cards, user computer systems, etc., which may all lead to the 678 error. Another reason is that if you use a router, you usually don't need to use a broadband connection. If you use it again at this time, you will get a 678 error.

Third, the solution:

1. Please confirm whether to use a router. If a router is used, the dialing operation will be completed by the router, and there is no need to dial manually on the computer.

2. Please confirm whether there are any software restrictions, such as firewalls or other Internet assistants. If so, please exit and try dialing again.

3. Please check whether the network card light flashes and whether the crystal head is plugged in. Please push the network cable inward to test.

4. Please disable the local connection before enabling it, and then reconnect the broadband connection. Specific methods: Right-click the desktop network neighbor, select Properties, right-click the local connection in the new pop-up window, select Disable, and then right-click the local connection and select Enable. If you call 678, you can call the customer service contact engineer to visit;

Note: Try not to reinsert the network cable many times. Plugging the network cable several times may damage the crystal head.

For more service offers, please pay attention to the official account of "Anhui Telecom" WeChat.