There is no connection to the network cable, there is no problem with the network cable, but it cann

Analysis reasons: 1. There are several data numbers in the network cable that are unstable;

2. The computer cannot recognize the network card;

3. There is a problem with the IP setting.

Solution: 1. Restart the computer and replug the network cable; (If it's not normal, find a line measuring tool to test whether there are several of the lines that are not connected (line tester connection method: computer network port--- network cable --- line tester.)

There are 8 small lines of network cables, if they are on, the 8 green lights of the line tester are on, and they are corresponding in pairs, if they do not correspond or there are lights that are not on, then use the line tester alone to measure the network cable (method: line tester --- network cable --- line tester), to see if it is a network cable problem, the network cable problem will be redone under the crystal head).

2. There is also the problem that if there is a circuit in the computer network port, which may be the reason for the poor contact between the crystal head and the computer, the solution is to change the crystal head to a better one, and do not use the poor quality one.

3. I have encountered the problem that the computer integrated network card cannot be connected with a self-made network cable, but the ** with the router is passed. Later, there was no way to buy a network card for 30 yuan, plugged in the new network card, the computer could not recognize it, and then disabled the integrated network card in the BIOS (there are instructions on the Internet), it was automatically recognized, and the connection was normal.

4. Also, if it is a local area network, pay attention to the IP settings (see the relevant instructions on the Internet).

Check to see if the Microsoft network client is enabled in the properties, if it is enabled or it doesn't work, just create a new connection, then it shouldn't be a big problem

If your computer's network card is broken (or in poor contact), replace it with a new network card (about 25-30 yuan).

There may be a problem with your desktop computer's network card.

If there is no problem with the network cable, then the reason why you can't connect to the network is that the local IP protocol is wrong and needs to be set again.

Solution: 1. Click the network connection option in the control panel in the lower right corner of the computer and click Open Network Sharing Center in the page to enter the Network Sharing Center.

2. After entering the network sharing center, click the name of the wireless network that needs to be set.

3. After opening the name of the wireless network, click the attribute option in the pop-up dialog box to enter the attribute setting interface of the wireless network.

4. After entering the property setting interface, double-click the protocol version 4 option on the page to open the IP address setting interface of the wireless router.

5. After entering the settings interface, click Use the IP address below on the page, enter the appropriate IP address in the dialog box, and click the OK option to save the settings.

Connecting the network cable without network is caused by poor network cable contact or computer hardware problems.

You can unplug the two ends of the network cable and reconnect it again to see if you can connect to the Internet, or check whether the network cable is damaged, and put the network cable on another computer to connect it.

After ruling out the cause of the network cable, the lack of network connection to the network cable is a problem of computer hardware excitation. If you have connected to wireless WiFi before, you need to disconnect the wifi and then connect the network cable, or directly click on the wifi connection of Hu Sun to open the computer, and disable all WiFi options.

Solution:

If the router turns on the red light, it means that the network cable is broken or the router is broken, you can change the router, if the optical modem turns on the red light, it means that there is a problem with the connection of the network cable, you can call the broadband customer service to understand, and find a professional to repair it.

If there is no problem with the router, it may be that there is a problem with the router settings. Reset the router and set it again, the router reset is mainly through the reset button at the power interface of the router, press and hold to reset, and then log in to the router again to set the router login password, wifi password, etc., and then use the computer to reconnect. <>

If you can't connect to the internet after plugging in a cable, there are several possible reasons for the cracking:

1.Improper network cable connection: Make sure that the network cable is properly connected to the network port of your computer or router.

3.Network failure: Check if your network equipment is working properly, including routers, modems, switches, etc.

4.Firewall settings: Check to see if your firewall settings are blocking network connections.