Cannot access the Internet through broadband, code 678
According to your description, it is a line failure. Error 678 is an error code that often appears during connection.
Broadband adsl dial-up Internet access uses pppoe protocol connection, transmits data through telephone lines, and uses adsl dedicated modem to realize data modulation and demodulation. The meaning of error message 678 is: the remote computer is not responding, which means that it is sent from the computer Instructions are sent to the network card to send data to the outside, including the transmission of telephone lines, the port processing of the terminal board of the central office (telecommunications office computer room), and the process of returning data to the computer. If there is a data transmission problem, a 678 error will be prompted. Simply put, the network is down.
When users encounter "Error 678", the first thing they should consider is a line failure, and then follow the following steps:
1. Has your computer been touched recently? In particular, have the ADSL Modem connections and lines been changed? Please first check whether the MODEM light flashes. If it flashes, check whether the lines are connected correctly (mainly on the splitter, there are three ports, each port corresponds to a line. The connection method is the bus, which is the incoming line port. The telephone is connected to the phone port, and the modem or adsl is connected to the broadband modem. You can also directly connect the telephone line to the modem to try, this can rule out that the splitter is broken). If the connection is correct and it still flashes, check whether the phone line has a connector. If the line is oxidized and the contact is not good, the signal will be unstable.
2. Ensure that the MODEM is working properly. Is the MODEM damaged?
3 Close MODEM, restart the computer, and then open MODEM to solve the problem.
4. If the above steps cannot solve the problem, check whether the network card light is on. If the network card light is not on, check the network card and network cable.
5. If the above operation is invalid, contact the telecommunications department to confirm the port. Sometimes I encounter a "678" error while surfing the Internet at home. At first I couldn't find any problems, but later I found out that the port at the telecommunications office was loose, causing the line to be blocked.
6. There is another situation. If you have more than two computers at home and the HUB port used to connect the computers is damaged, "678 error" will also occur. In this case, replace it with a good port. That's it.
7. There is a reset button behind the MODEM. Press and hold it for 5 seconds and then release your hand to reset the MODEM.
However, the fault with the most error 678 should be the external line fault.
When the above methods cannot solve the problem, you should contact the local dealer and let him come to repair it.