What is the cause of error 678 on a broadband connection?

1. First confirm that the adsl modem dialing is normal, because the IP automatically obtained by the network card is not cleared, so the network card cannot get the new IP address when dialing again, the operation method is: turn off the adsl modem, enter the network connection of the control panel and right-click the local connection to select disable, right-click the local connection to select enable after 5 seconds, and then turn on the adsl modem dial-up; 2. If the first step is invalid, then in the case of turning off ADSL MODEM, still disable the local connection (network card), restart the computer, then start the local connection (NET CARD), and then turn on ADSL MODEM to solve the problem; 3. If the above steps can not be solved, check whether the network card light is on, if the network card light is not on, refer to the dispatch knowledge base: "the network card light is not lit or often does not light up" solution 4, if the network card light is normal 1, 2 steps can not be solved, then lead the user to uninstall the network card driver, reinstall the network card driver, if the user XP system according to:

Knowledge number: 9973, how to set up ADSL dial-up connection under winxp method to lead the user to create a dial-up connection, if the 98 system recommends that the user install rasppoe software or ehernet300 software connection. 5. If the above operation is invalid, contact the telecommunications department to confirm the port.

Failure of the modem is the main cause. 7.If multiple computers are using routers to access the Internet, you can try removing the router and connecting to InterNT.

If you can surf the Internet smoothly, it means that the router is faulty, and you should troubleshoot the router or replace it with a new one. 8.If you are an ADSL annual subscriber, if this situation occurs during use, it may be in arrears, please consult the customer service center.

In some areas, China Telecom or China Unicom users, in the case of arrears, can get through, but can not access the Internet, at this time it may also be in arrears, because now the telecommunications departments in some areas are not in arrears, but stop the use of the network. 9.Some brands of modem are also prone to error 678 due to insufficient power supply - kellybye experience - if the above methods do not solve your problem, you can try the reset of adsl modem two or three times and try again.

In addition: ADSL modem device damage will also cause error 678, although on the surface it seems that ADSL modem is working normally, but it is a connection failure, the author has encountered this kind of problem, and finally changed to a new ADSL modem party to solve the problem.

1. Broadband Internet display "error 678", it is caused by modem damage, poor contact of network cable and network card, ** line obstruction, etc., if there is a router, it is recommended that you can first power off and restart, if it is still not available, it is recommended that you remove the router and check whether the modem signal light is normal:

1. If it is normal, please try to restart the network card, unplug the network cable, and restart the modem;

2. If it is not normal, please try to unplug the ** cable, restart the modem, check whether the separator is connected correctly and unplug the above cable.

2. If it cannot be solved, you can contact the local manual customer service for feedback.

You have to wait until the cat's lights are not flashing before you can connect, and if the second light is flashing, it will not connect. If it keeps flashing, it means that the network cable is not in good contact.

Error: The meaning of 678 is that the remote computer is not responding, which means that the network is not working.

678 Error Handling Steps and Methods:

1. Have you ever touched the cat's connection and line recently? Check again"Cats"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.

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; The operation method is: turn off the cat, enter the network connection of the control panel, right-click the local connection to select disable, right-click the local connection after 5 seconds 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 connected to a hub or network switch, router, etc., will also occur when the access port of the public equipment is damaged"678 errors", replace the port.

8. Sometimes, even though the network is normal after being tested by telecommunications, it will still appear"678"At this point, consider the conflicts of various application software. Such as:"Yahoo Assistant", anti-virus software, firewall, etc., are abnormal"678"Hints of the phenomenon. Before you find an error"678"When prompted, uninstall first"Yahoo Assistant", exit the antivirus software or temporarily turn off the firewall and reconnect to see if the problem is solved.

9. If the above methods are invalid: restart"Cats"and computers, which may work.

The file has nothing to do with whether you can access the Internet or not. Because the prompt can't find the file is not the reason why you can't get on the network, the machine just needs to call the content of the file, and its content just wants to tell you what makes you unable to connect to the network, just the help file of the network connection, it doesn't matter if you can't find it.

Plug the network cable and the computer restarts.

If the dial is still 678.

That 90% is a line problem, just contact customer service to find someone to check the line, and if it is not a stand-alone use.

When it is connected to a router.

To do a stand-alone test first.

The main line is connected to the computer and then dialed in to connect.

Halo, it is recommended to take a screenshot,. This document is not important.

You can also find any HLP file and change it to this file name.

I've encountered it, it's a connection error, mine is generally just restart the computer. Or turn it off and back on after a while.

If it doesn't work, it's an outside problem. And not an indoor problem.

Question: Wi-Fi is available, but there is no internet access. The display WAN is disconnected, I don't know if there is a problem with dial-up Internet access, what can I do?

Answer broadband connection error 678 common solutions to faults 1, check whether the computer network card can be used normally, unplug the network cable, and there is generally no problem if the local connection is disconnected in the lower right corner, of course, the driver fault is not ruled out. 2. See if you have dialed up with the router, after using the router to dial up the Internet, the computer does not need to dial up again, and you can go to the Internet directly after starting the computer. 3. Check whether the broadband is in arrears (if the telecom does not pay for more than two months, the system will automatically stop the broadband connection, and there will be a reminder of arrears when you open the web page).

4. Check that the crystal head of the network cable has poor oxidation contact, or the network cable is aging and broken. Check whether the LAN light or link light of the Internet modem is always on or flashing, if the light is off, it means that it is not connected, and the replaced network cable is tested. 5. ADSL modem (referred to as cat) failure, for example, if the cat is damaged by thunder, check whether the power (power) light of the Internet cat is always on.

If it does not light up or flashes, it means that the Internet modem is faulty, and of course, it may also be a problem with the power adapter. 6. Check whether the ** language separator is plugged in incorrectly, and the Internet cat is connected to the ** connector, which will also cause the inability to access the Internet.

Dear, do you use broadband dial-up Internet directly or use a router.

If there is a line problem, check the connection between the network cable and each configuration.