Suddenly, the network is disconnected and cannot be connected, indicating that the network cable is

Check to see if the local connection is disabled. Find the local connection through the online neighbor to see if it is disabled, if it is, click Enable and try again.

Check whether the properties of the local connection have been changed. Local Connection—Properties—General—Configuration—Advanced—Properties, and compare the setting of the property value with the neighboring computer. This is mainly the speed and duplex, MAC value and other settings.

The chances of a local connection being unavailable due to this reason are very small.

It may be a problem with the network cable. It is also possible that the crystal head of the network cable interface is faulty, and the local connection may show "The network cable is not plugged in". The solution is to plug this network cable into a computer that can connect to the Internet, if it can be used, it means that the network cable is good, then eliminate the possibility of network cable failure.

If you can't, try a good cable.

It may be due to the NIC driver. First, check whether the NIC driver is installed or faulty. Right-click on My Computer - Management - Device Manager - Network Adapter and see if there is a yellow exclamation mark or anything like that.

Here's how to fix it:

1. Replug the network cable.

You can try to reinsert the network cable connector into the computer network card interface.

2. Crystal head failure.

If the network cable is still unplugged after replugging the network cable, it is likely that there is a problem with the crystal head of the network cable, and it is recommended to try another network cable.

3. Software problems.

For software problems, you can check the network card driver, and it is best to update to the latest driver.

ARP tools may be a virus in the computer, or caused by the tool, this situation will cause the network card to be good and bad, often intermittently prompt the network cable is unplugged, in this case, you can use light guard, 360 security guard and other tools to detect whether there are attacks and viruses on the computer.

Is it the broadband you use? Check the network icon in the notification bar on the right side of the computer, and display a red x, check whether there is any poor contact or even front-end problems in the connection around the network, and you can contact the broadband operation service. Show Yellow!

Check the connection of the wireless router, check whether the indicators of the broadband input and output interfaces are flashing, if all flashing, and the connection is not available, you can consider the broadband network disconnection and contact the operator to solve the problem.

If there is a problem with the driver, use the driver wizard to check it.

Task Manager to see if there are any yellow exclamation marks....

It's that you're not connected to any network, or the driver isn't installed.