I don t know what s wrong with the broadband connection for these 2 days, it s always error 678!

1.Error 678: If the remote computer does not respond, it is generally possible that there is a problem with the computer system, a problem with the broadband modem or line, which causes the broadband modem to fail to synchronize, or a problem with the equipment in the operator's computer room 2

Check whether the status of the broadband cat is normal when the connection is dropped, whether there is a DSL or link light is always on, the DSL or link light on the broadband cat indicates the communication status between your broadband cat and the operator's equipment room, it should be always on at normal times, if it is not bright or shiny, the biggest possibility is that there is a problem with your **line, directly call the operator's customer service** to report the obstacle and let people come to check and repair: Telecom 10000 Netcom 10060 satisfied.

1. Check the signal light on the "cat" (mainly DSL, ADSL, LINE, LINK, @等), if flashing, check whether the line is connected to the right (mainly on the separator, the incoming line is connected to the line, the machine is connected to the phone, modem or ADSL to connect the cat, you can also connect the incoming line to the cat to try, to rule out the bad separator), if the connection is still flashing, check whether the line has a joint, and the signal will not be stable if the line oxidation contact is not good (** If there is a problem with the crystal head or line of the line into the cat, it will also cause the line to be blocked. 2. Confirm that the adsl modem dialing is normal, because the IP automatically obtained by the network card is not cleared, so when dialing again, the network card cannot obtain a new IP address will prompt 678, the operation method is: turn off the adsl modem, select disable the local connection, and enable the local connection after 5 seconds, turn on the adsl modem dial-up; 3. Check whether the NIC light is on, if the NIC light is not on, check the NIC and network cable.

4. If the NIC light uninstalls the NIC driver normally, reinstall the NIC driver. 5. Confirm the port, the port is loose, resulting in the line not working. 6. If there are more than two computers at home, and the hub port used to connect to the computer is damaged, there will also be a "678 error", so you can replace a good port.

7. Application software conflicts will also cause network failures. For example, "Yahoo Assistant", anti-virus software, or firewall has the error "678". Try uninstalling Yahoo Assistant, quitting the anti-virus software, or temporarily turning off the firewall. 8. As a last resort, restart the cat and the computer.

678 is: the remote computer is not responding; That is: from the computer to send instructions to the network card to send data, including the transmission of the ** line to the upstream circuit of the port of the terminal board of the office (telecommunications bureau computer room end); When the port of the terminal board of the central office (telecommunications office computer room end) processes the data transmission problem during the downstream circuit that returns the data to the computer, it will prompt a 678 error.

In other words, the network is not available. 678 processing steps and methods: 1. Have you ever touched the cat's connection and line recently?

Then check whether the cat lights will flash, if you want to flash, check whether the wiring is correct, if the connection is still flashing, check whether the ** line has a connector, and the bad oxidation contact of the line will also cause the signal to be unstable Copyright Statement: This answer is original to "Harmony", and no one is allowed to steal it! 2. Confirm that the cat dial-up is normal, and the IP that the network card will automatically obtain is not cleared, so when dialing again, the network card cannot obtain a new IP address, and it will prompt 678; Here's how:

Turn off the cat, enter the network connection of the control panel, right-click the local connection and select disable, after 5 seconds, right-click the local connection to select enable, and then turn on the cat dial-up; 3. If the first step is invalid, turn off the cat, still disable the local connection (network card), restart the computer, then enable the local connection (network card), and then open the cat to solve the problem; 4. When the above steps are invalid, check the network card and network cable. 5. The NIC light is normal, steps 1 and 2 are invalid, uninstall the NIC driver, and reinstall the NIC driver. 6. If the above operation is invalid, contact the telecommunications department to confirm the port.

See if the port on the telecommunications bureau is loose, causing the line to be blocked. 7. Multiple computers are connected to a hub or network switch, router, etc., when the access port of the public equipment is damaged, there will also be a 678 error, and the port can be replaced. 8. Sometimes, although the network is normal after telecom testing, there will still be a prompt of 678, and the conflict of various application software should be considered at this time.

For example, Yahoo Assistant, anti-virus software, or firewall has an abnormality, causing a 678 prompt. If you notice error 678, uninstall Yahoo Assistant, quit your antivirus software, or temporarily turn off your firewall and reconnect to see if that solves the problem. Copyright Notice:

This answer is original to "Harmony" and must not be stolen by anyone! 9. When the above methods are invalid: restart the cat and the computer, it may work.

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Network failures, router failures will cause broadband to be unable to connect!