How to solve the problem when the computer shows that the network cable is unplugged

It prompts that the network cable has been pulled out, and there is a red cross on the computer icon in the lower right corner. First of all, let me say that this problem has nothing to do with the system or the network card, but only with the connecting parts of the device.

Fault analysis is as follows:

1. There is a problem with the network cable connecting this computer to the router, resulting in poor contact with the interface of the host box or poor contact with the interface of the router.

2. To eliminate the problem of the network cable, the only remaining problem is that the network cable interface behind the computer chassis is faulty or the router interface is faulty.

According to what you said, if the computer is tested at someone else's house and everything is normal, then we can judge that the interface behind the computer case is good. Then only the routing interface or the network cable is faulty. Connect another normal machine to the interface on the router and try another interface on the router. If everything is normal, then the router fault can be eliminated, and it is initially determined that the network cable is faulty.

Solution: Change the network cable to another normal computer and try it. If the other computer prompts that the network cable has been pulled out, it further proves that the network cable is faulty. It is recommended to buy a finished network cable with a crystal head, which is much more stable in contact than a hand-made crystal head network cable.

I would like to remind everyone to be merciful when unplugging and plugging in network cables. The plastic crystal head on the handmade network cable is very fragile, so be careful!

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