error code refers to a phenomenon that when people use software and hardware, the software and hardware can't operate normally. The software and hardware can be judged and identified by their original settings, and the operator can quickly find out the specific reasons why the software and hardware can't operate normally by identifying the error code.

Some simple solutions to the error 678/651/815

First, you can suggest that the user try to restart the PC or MODEM to eliminate the accidental failure of the user's PC or MODEM.

Check the lighting condition of the MODEM:

Step 1: Check whether the power light is normal, and turn to Step 2 when it is stable. If it is not lit, it may be caused by the user forgetting to turn on the power switch of the modem, plugging in the power cord or loosening the power regulator. After guiding the user to adjust, if it still doesn't work, it is that the MODEM is broken;

step 2: check whether the DSL light is on normally. If it lights steadily, go to the third step. If the DSL light keeps flashing, it indicates that the ADSL line is being connected or can't be connected all the time. This is a line problem. One of the most common cases is that the incoming line of the user's separator and the port where the phone is answered are wrong. At this time, you can instruct the user to check the separator, change the connection port, and then check whether the telephone line connector in the room is in poor contact, or cancel the separator, directly connect the home line to the MODEM, and then restart the modem. If the problem still cannot be solved, check the external line. ;

Step 3: Check the LAN light. If it doesn't light up, go to Step 4. If it lights up steadily, there may be something wrong with the computer's dial-up software. It is suggested that users reinstall the dial-up software and still cannot solve the problem.

Step 4: If the LAN light doesn't light up, it is a connection problem between the modem and the computer. Please unplug the network cable from the modem to the computer again. If you still can't solve the problem, check the list.

Some simple ways to deal with error 691/619/629

Error 691/619/629 is generally caused by inconsistent account passwords, arrears, dead account or port errors.

some simple handling of error 769/797

error 769/797 is generally caused by the network card being disabled or the driver having a problem (769 for XP system and 797 for windows2 system).

solution: for the computer with me on the desktop, click the properties of my computer → hardware (98 system does not have this step) → device manager → network adapter. If the network adapter has a red cross ×, left-click the red cross and then click "Enable". Second, the network adapter has a yellow question mark or exclamation mark, which means that the computer can't recognize the network card, which may be a driver problem of the network card. It is recommended that users reinstall the network card driver. Third, the network adapter can't be found in the device manager, which means that the computer can't find the network card. Generally, there is something wrong with the network card. It is suggested that the user unplug the network card again or find a computer company to deal with it (because the network card is in the host, if the user is unfamiliar with the computer, please guide the user to find a computer company to deal with it).

No error code:

It is suggested that the user try to restart the PC or MODEM to eliminate the accidental failure of the user's PC or MODEM. First of all, confirm whether the user uses the route. If the user uses the route, it is suggested that the user temporarily cancel the route and switch to stand-alone dial-up Internet access for testing (because the user does not need to dial-up, so the error code will not be reflected). If the user belongs to stand-alone dial-up Internet access but there is no error code, please check whether the modem's light is normal. If it is not normal, it will be handled according to fault 678. If the lights of the modem are on normally, please check whether the local connection in the lower right corner of the computer is connected. If the local connection prompts that the local cable is not connected properly, don't indicate that the line is not connected properly. Reconnect the network cable. If the local connection prompts that it is connected, it will be handled according to 691.