Under what circumstances can t you connect to the Internet broadband connection is good .

If you can connect wirelessly, the router is working properly. There are several reasons why you may not be able to access the internet:

The connection between the broadband network cable and the router is not good (for example, it is not plugged in tightly, the connection is too loose, the copper sheet at the crystal plug is rusty, etc.). The network cable signal can't enter the router, so you can't access the Internet.

The broadband cable is damaged – probably in some places.

There is an error in the network connection account and password (not the router password, but the broadband Internet password).

Network failures. This needs to be dealt with by the network company: you can report the problem to the network business. They will send someone to inspect and deal with it.

FYI.

Generally speaking, there are more than two cases of covering, one is 691, the password is wrong, or it is due to be paid.

The second is 678, which is likely to be restarted when the router is not working (especially in summer, when the temperature is too high). Otherwise, your ISP (Telecom, Radio and Television, Unicom) equipment failure (power outage, fiber failure, etc.).

Broadband Connection Error 691 (Access Denied Due to User Missing Hole Name or Invalid Password on the Domain) Error 635 (Unknown Error) is handled as follows:

1) Fill in the wrong username and password.

If it is normal after reinstalling the dialer software, the reason is "Dialer software lost".

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

Step 1: Check whether the modem signal is normal, and restart the modem if it is not. If it is normal, see step 2.

Step 2: Ask the user if they have any software such as a firewall or 3721 Internet Assistant, and if so, suggest that the user log out.

Step 3: Instruct the user to check the NIC status and unplug the network cable

1) If the fault is solved, fill in: the cause of the fault is "PC hardware problem";

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

Step 4: If the conditions are met (the user has dial-up software, install the CD (win98 should have a network card driver), it is recommended that the user delete the dial-up software and, and then reinstall the network card driver and install the dial-up software

1) If the fault is solved, fill in: the fault symptom is "dial-up connection timeout", and the fault cause is "PC hardware problem";

2) If the fault still exists, enter step 7 to continue processing.

Step 5: Determine whether the ** line behind the modem is available and whether the splitter is connected correctly

1) If the modem can not be used, and the charging number can be used, it is recommended to replace the **line, and the cause of the fault is "the user's indoor line failure";

2) If all ** of the user's home billing number cannot be used, please call customer service **10000 Telecom (10060 Netcom 10050 Tietong) to report the obstacle. Step 6: If the above processing is invalid or the user cannot do simple cooperation operations, please call customer service **10000 Telecom (10060 Netcom 10050 Tietong) to report the obstacle.

Dialed up? Don't use software just yet, try to see if the command line ping or something works.

Set the IP attributes of the broadband connection to the automatic acquisition mode.

Set up the broadband again, if you're using a router to access the Internet.

How do you connect to the Internet? Routing? Direct dialing? Be specific!

Double-click on the local connection to see the increase in packets received in the column.