Common ADSL broadband faults and solutions

1. According to the information you provide, if you are using broadband and cannot access the Internet, it is recommended that you troubleshoot in the following ways:

Perform stand-alone dial-up, if you are using a router, please temporarily disconnect the router for testing;

Check whether the network cable or ** cable is loose;

Check whether the network device such as the modem is overheated, and try again after restarting.

It is recommended that you run a full virus scan of your computer.

2. If it still cannot be used normally after self-service troubleshooting, it is recommended that you can contact the manual customer service of Unicom to report the fault, and our company will deal with it for you as soon as possible.

The following table describes the common fault phenomena of China Unicom Broadband:

1. 678 fault (unable to connect to remote computer).

1. It is recommended to restart the computer and modem first;

2. If it still can't be solved, it is recommended to check whether the network connection in the self-test room is normal and whether the network card light is on;

2. 691 failure (access denied due to invalid username or password on the domain) 1. First, verify whether there is any arrears;

2. If there is no arrears, it is recommended to re-enter the username and password.

3. If the username and password are still incorrect, it is recommended to reset the broadband password.

3. 769 fault (unable to connect to the specified target, mainly caused by the network card being disabled or the driver being lost).

1. Please right-click "Online Neighbors" "Properties" "Local Connection" to check whether the local connection is in the "disabled" state, if so, just double-click the local connection and see the status changes to "Enabled";

2. (If there is no local connection in the attributes) the NIC driver is lost, it is recommended to reinstall the NIC driver;

3. It is recommended to check whether the network card is loose or damaged.

85% indicate that the line is passable, and the error is in the telecom authentication platform.

1. In the mobile phone desktop, click the "Telecom Business Hall" icon (subject to the actual operator of the IPTV broadband you have installed).

2. In the interface of "Mobile Business Hall", click the "Inquiry and Handling" button below.

3. In the interface of "Inquiry and Processing", select the "Broadband" option on the left.

4. In the "Broadband" interface, select the "Broadband ITV Troubleshooting" icon.

<>6. After entering the page of "Quick Fault Repair", select the "Telecom TV (IPTV)" icon below.

7. On the page of "IPTV self-service troubleshooting", enter the account number of IPTV dialing, select the province and city, click the "OK" button below, and follow the instructions for self-service troubleshooting.

The broadband connection cannot be connected, and an error will be prompted**, do you know what these **** mean? Today I will share with you the solutions to common broadband failures, I hope it will help you!

1. 691 solution

1) First, check whether the user is in arrears (if the previous arrears have now returned to normal, but the Internet cannot be accessed, check the broadband recovery time after paying off the arrears).

2) Guide the user to re-enter the password on the dialing interface (note that it is not a simple redial, it is a re-entry).

3) Re-enter the password and re-dial the test.

When logging in to the broadband, I sometimes accidentally touch the space bar. At this time, it will cause a login error to appear with error 691, at this time, you should carefully re-enter the password.

Sometimes according to the user's needs, they will configure multiple network cards on the host, when the network card is enabled at the same time, there will be a prompt error 691 when logging in to broadband, as long as a network card is enabled, the remaining network card is disabled, and there is no problem when logging in.

An error occurred in the dial-up software on the user's computer, instructing the user to re-create the dial-up connection.

The IP address pool is full, and this phenomenon is centralized, fixed in a certain area, not individual, which requires us to make suggestions and expand the capacity of the Internet department in a timely manner.

If the error is still reported, it is recommended that the user go to the local business office to reset the password, and if it still cannot be solved, the order will be accepted.

2. Solution to 651**

1. First ask the user whether the computer has been moved (network cable or setting or newly installed software) to disable the local connection first, after 5 seconds, and then re-enable the local connection, right-click to select the status, see whether the packet receiving and sending is the first standby, check whether you can get a valid intranet IP, prompt that the local connection has been connected, and then try to connect with broadband dial-up.

2. If the above methods are not solved, it is recommended that the user check the indoor network cable, and whether the network cable is exported to the user's computer for damage and looseness.

Tips: The broadband connection of a general brand computer or laptop prompts error 651 and the network card may be disabled, the solution is the same as the solution to error 769. 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 651, the operation method is:

Turn off ADSL modem, 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 ADSL modem to dial up;

If the first step is invalid, then disable the local connection (network card) when the adsl modem is disabled, restart the computer, then enable the local connection (network card), and then turn on the adsl modem.

If the above steps do not work, check whether the NIC light is on, and if the NIC light is not on, check the NIC and network cable.

If the NIC light is normal, step 1 and 2 cannot solve the problem, uninstall the NIC driver and reinstall the NIC driver.