The network has been unstable with Error 651

Line signal issues.

If you use China Unicom Broadband error 651, it means that you cannot connect to the remote computer. The easiest way to solve the problem is to check whether the network connection in the room is normal and whether the network card light is on.

If the fault is still not restored, you can report the fault according to the following prompts:

Causes and Solutions of Broadband Error 651:

1. Network cable failure

It may be that the network cable is in poor contact, you can try to unplug and reinsert the two connectors of the network cable, if the network cable is damaged, it is best to replace it with a new network cable.

2. Modem failure

If the network card light still does not light up after replugging the network cable, it may be that the modem is faulty, and it is best to repair it or replace it with a new one.

3. The NIC driver is faulty

Right-click Desktop Computer - Properties, select Device Manager on the properties page, and locate Network Adapters on the Device Manager page. Generally, there are two network cards below, a wired network card and a wireless network card.

Click Wired NIC - Disable, a prompt box appears, click OK, and then right-click to start it again to see if the redial is normal.

If not, right-click on the wired network card, select Uninstall, uninstall the network card driver, and then click Actions in the Device Manager menu - Scan for Hardware Changes. Typically, the system restarts the network card with a generic driver. Once the installation is complete, restart your computer.

4. Operator issues

At this time, you can try to call the operator to which your network belongs to access customer service, tell it the fault prompt and seek assistance to solve it.

5. Shutdown in arrears

This problem is best solved, as long as the fee is renewed, the network can be used normally.

Look at the indicator light on your router to see if there is a faulty light, reset the router, that is, the reset button behind the router to operate.

Either the router is broken, or the route is not set up properly.

The "Error 651" displayed on broadband Internet access is mainly caused by the failure to connect the user's terminal computer with the Netcom central office equipment, which is generally divided into five situations: "network cable failure", "modem failure", "network card failure", "modem itself setting", and "network operator problem". Here's how to deal with such cases:

1. Please replug the network cable and ** cable and restart the modem test;

2. Please disable the local connection first, and then enable the local connection;

3. Please reinstall the NIC driver;

4. If you use a router, please remove it, and dial test it on a single computer.

If error **651 occurs, it is recommended that you troubleshoot the problem from the following aspects:

1. Restart the modem and plug in the optical fiber connector.

2. Judge whether the status of the modem indicator is normal, if it is abnormal (the modem lights up red, the PON light flashes, and the indicator light is abnormal), you can call the local 10086 for broadband fault reporting;

3. Remove the router and directly connect to the optical modem to dial-up to connect to the Internet, if the dial-up connection fails, you can further feedback and deal with it through the broadband fault reporting center;

4. Reconfigure the router.

How to solve the broadband 651 error.

It may be that there is a problem with which setting, I recommend using a factory reset, in case it still doesn't work, just flash the machine to upgrade....

The head of the network cable ** is not well connected.