Why does the computer get old and disconnected, and the network cable is not plugged in.

The crystal head is loose or the quality of the cat is too poor.

When the computer keeps showing that the network cable is not plugged in, there may be several reasons:

1.Poor network cable connection: Please check whether the network cable in Zhendong is firmly plugged in, observe whether the plug is loose, dropped, etc., if so, please plug and unplug again.

2.Faulty network cable: Try replacing a new network cable to test whether the network cable is damaged.

3.Hardware failure: Check your computer's network card or network card drivers for problems.

4.Network device failure: Check if the router or switch device is working properly, try restarting the network device, and then reconnect the computer.

If the above methods still do not solve the problem, it is recommended to ask a professional or network technical support personnel to check or repair.

The crystal head is broken, the switch is broken, the network cable is broken, and the contacts of the network card socket are bent. Wait a minute.

Try a different network cable, and you can basically solve it.

You can also find an old man who can make network cables, test the network cable for you, and replay the crystal head.

Many home improvement network cable junction boxes in the RJ45 network Sun Qing number line module are fake and shoddy products, module merchants in order to facilitate home improvement personnel to play the line, the module uses a broken plastic ** can be pressed. The network cable of the new building and the network port connection of the office seat are basically this kind of inferior modules.

This kind of module will not take more than half a year, and it is easy to have bad contact. After confirming that the module is in poor contact, buy 2 professional modules, and connect the module with a special wire cutting knife, and the quality is leveraged.

The computer keeps showing that the network cable is not plugged in, which may be due to the physical network. There are many reasons, such as not plugging in well, network cables, network card interfaces, etc.

There may be a number of reasons for this problem. First of all, you should check that the network cable is properly plugged into any LAN port of your computer and the WAN port of your router, and that the connection between them is firmly code-busted. Second, if you are using a wireless network card, check that the wireless signal strength is sufficient and that the wireless security lounge is set up properly.

Finally, if the problem persists, you should try reinstalling or upgrading the appropriate driver.

1. If there is a red cross on the network icon, it means that the network cable is not connected or there is a problem with the network, then you can check whether the network cable is plugged in or plugged in the wrong position.

2. If the red cross is not displayed, it may be that there is a problem with the network or system settings of the computer itself, or a problem with the system network card.

Troubleshooting points for computers with no network cables

1. Set up a dial-up connection according to the operator's requirements, connect the stand-alone device to the operator's optical modem, and ping the operator's gateway or DNS server address after dial-up the Internet.

2. If the ping does not work, it means that the operator's external network network is not connected, just call ** to find the operator to report for repair.

3. If the ping means that the external network network is normal, it has nothing to do with the operator's network, and the fault is on the router, restore the router to factory settings, and then reset it to eliminate the fault. If the router still fails to pass through step 3 above, you can determine that the router hardware is faulty and you can only replace the router.