2 computers are directly connected to the network by cable, and only the computer that is the server

Set up the issue. Control Panels - Performance & Maintenance - Management Tools - Computer Management - Local Users & Groups.

It is recommended to reinsert the network card or reinstall the driver and try again.

In addition, if there is a problem with the working mode of the network card, it will also affect the use, you can find the "My Computer" icon of the computer, right-click, select "Management - Device Manager - Point to the Network Adapter", find the network card, and then right-click the network card, in the "Properties--- Advanced - mediatype or link speed", set the working mode of the network card to 10m and a half duplex.

Problems with your computer's network card. Either the driver is not on, or the network card itself is broken.

Disable Enable Local Connections and Try Again.

The network card is broken, and if the network card light is not lit after connecting to the network cable, there is no doubt that the network card is wrong. Repair or replacement.

1.A computer plugged into an internet cable is just the simplest physical connection.

2.The real link between the signal sent by the computer and the signal received by the peer is complete.

3.The unplugged cable is displayed, indicating that the signal cannot be sent and received, and the true link is not completed.

Several possibilities.

There is a problem with the network cable itself, such as the crystal head is not done well or the line inside is broken.

There is a problem with the network cable port of the computer host.

There is a problem with the network cable port of the switch.

Is the network cable not plugged in at both ends?

Plug the confirmed network cable into your computer's network port and see if it still prompts that the network cable has been unplugged. If the fault persists, there is a problem with your NIC and you need to replace it.

If the network cable or connector (crystal head) is faulty, if there is no problem, it means that your computer's network cable port is worn and aged. Poor contact.

The network cable must be broken, the plug or the middle is broken.

There may be a problem with the crystal head of the network cable, after connecting your unit, press it again.

Check whether your network card driver is typed, or let him help you see if the network card is broken and summarize your reason:

1 If there is a problem with the network cable, plug the good one into the upper and lower interviews.

2 NIC driver.

3 Whether the network card is good.

4 Check if the cat and router are normal.

The connectors are good, and it is not a bad contact, then it is only possible that there is a problem with your computer network card, or you do not have a network card driver, the next driver wizard, automatically install a network card driver.

How did you connect it, are the 2 routers connected, if so, you can connect the usable cable to this machine to see if it is normal, if that one can be used on this line, it may be that the network card is broken or check whether something is set on the router, if it is not possible to connect that one, it is a problem with your line or route.

The transmission rate cannot be automatically negotiated.

Generally, it is caused by aging lines, too long transmission distances, poor contact, or damage to network card drivers and network protocols.

You can manually set the network card to 10M full-duplex to try.

Make sure that there is no problem with the connection between the Internet modem and the > router and > the computer, and that the network cable is not damaged.

If there is no problem above, it may be that there is a problem with the network card, please try to update the network card driver, check whether the Ethernet interface is not damaged, if the driver is still not available after the update, please go to a qualified after-sales service center for maintenance, this maintenance generally does not cost too much.

The phone is routed through a wifi wireless connection, and the computer shows that the cable is unplugged because the computer is wired to a wireless router or switch. So it's not a thing. This situation indicates that there is a problem with the connection line from the computer to the wireless router, the easiest way is to test it with a line tester, of course, if you know where the line has been moved recently, the goal is clearer, it may be that the connector is loose, the network cable to the router, the network cable to the computer are replugged once, try to see if it can be normal.

If not, the only way to do this is to redo the crystal head. If you don't know how to do it yourself, you can take the line to the computer city and ask the one who sells the network cable to do it.

The cable is unplugged, that is, the network cable is not plugged in properly, you check whether the Internet cable on the main chassis is loose, or whether the router is loose!

The NIC driver is broken 2The computer network cable interface is broken 3Trojan, uninstall the NIC driver, and install it from scratch Try it.

You can use the router directly, a network cable, and the router has a dial-up function. No, you can use a hub.

You can brush it, call the router customer service, and their engineers have internal programs that can solve it.

Just buy a router.

Supposedly, the route should be possible, and it can automatically remember the account password and automatically connect without swiping.