Why can t I connect when I install broadband?

I found this.

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 there is a firewall or 3721 Internet assistant and other software, if so, it is recommended to use a broadband account to exit.

1) Firewall and 3721 Internet assistant post-test: if the fault is solved, the cause of the fault is "user software problem";

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

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 phenomenon is virtual or "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 other ** of 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.

Set up a dialing account from the new one.

There may be one of the following reasons why you may not be able to access the Internet:

1.If the line connection is not good, check and ensure that the joint is stable;

2.Check whether the VPI VCI settings are consistent with the information provided by the DSL operator.

3.Please confirm the correct installation of PPPoE dial-up software;

4.Check that the username or password is correct.

Check how much your broadband connection error ** is, to judge according to this, if it is 769, the network card is disabled, and the number of keys can be solved, if it is 691, the username and password are wrong, it may be caused by your username and password entered incorrectly, it may also be in arrears, and it may be because of the operator's dial-up connection software generated by the binding verification error, if it is an error 678, there are too many reasons, it may be a computer system argument problem, there may be a line problem, There could also be an issue with the carrier equipment.

Could it be because the network is too stuck, too many people use it, and then you can't install a router again.