The computer is not connected to the Internet, what is the matter with error 678, thank you

The process for error 678 (remote computer not responding) is as follows:

Step 1: Find out if there is construction and cutover work in progress in the area

1) If there is, please try again later;

2) If not, enter the next step to continue processing;

Step 2: Check whether the modem signal light is normal, if it is normal, enter step three, if it is not normal, check whether the ** line is available, whether the splitter connection is correct, if all ** can not be used, then according to the line fault processing;

Step 3: Check if there is a firewall or third-party software, if any:

1) Turn off the firewall and third-party software and try again

If the fault is solved, the troubleshooting is completed;

2) If the fault still exists, enter the next step to continue processing;

Step 4: Check the NIC status, disable, enable, and unplug the NIC cable

1) If the fault is solved, the troubleshooting is completed;

2) If the fault still exists, enter the next step to continue processing;

Step 5: Please ask the customer to install the client software and the NIC driver after the conditions are met (the customer has the client software, install the CD, delete the client software and the NIC driver, and then reinstall the NIC driver and install the client software

1) If the fault is solved, the troubleshooting is completed;

2) If the fault still exists, enter the next step to continue processing;

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.

Broadband connection error 678... This is generated by broadband dialing.

Does your desktop have wired broadband?

If yes, since the router is used, the dialing is automatic.

You can solve this problem in two ways:

1. Check if each line is plugged in correctly.

2. Check if the router settings are correct. (Note: After using the router, manual dialing is not required).

That's a line problem, just find someone from the local pipeline to fix it.