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I've tried this problem, no matter how you set it up and how to change the head, it didn't work, and then you can change it to a separate network card.
In addition to changing the network card, this problem seems to be unsolvable.
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Right-click on the Neighbor property, and in the pop-up window, right-click on the local connection, and click Enable. If it is already enabled, it is most likely a hardware issue.
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The firewall doesn't open the port.
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If you plug in and move to see if it is lit up, it should be that the socket is in poor contact.
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Is your laptop's network cable interface broken?
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It may be due to the NIC driver.
2.Check to see if the local connection is disabled. Find the local connection through the online neighbor, see if it is disabled, if it is, click Enable, try again, if it still doesn't work, see the third reason.
3.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.
4.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.
5.It is possible that there is a virus in the computer. Use anti-virus software to kill viruses in all aspects. Then try again.
7.There may also be a problem with the interface of the network card (card slot). If the solder joints fall off or there is too much dust in the card slot of the access network cable, the network connection may also be affected. This one is going to be repaired.
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If the route is changed, it may be that there is a problem with your network cable, and the wire in the crystal head may be loose, so try to replace a network cable.
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You say that you are surfing the Internet in the computer room (the lights of the crystal interface are not on), then this line must be blocked. You can check to see if your cable is plugged into the router. I guess one of these lines with the router is not plugged in well or is not plugged in.
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When surfing the Internet, it is recommended to reinsert the network card or reinstall the driver and try again, and pay attention to whether the network cable and network card interface are normal, you can try to change the network cable.
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If the network cable is changed, the socket is changed, and it is estimated that either the device you are connected to is broken or your network card is broken.
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Since the wireless network card is used, the wired network card is naturally not wired, of course, it must show that the local connection network cable is not plugged in.
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You right-click on my computer - Manage - Device Manager.
See if there is a network adapter inside.
If not. That could be a loose network card.
Or broken. If there is, it is a problem with the network cable or the crystal header.
You plug the network cable into someone else's machine and try it.
If you really can't do it, change the crystal head.
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Open Local Connection --Properties --Configuration --Advanced.
Connection speed and duplex mode".
10m full-duplex.
100m full-duplex automatic.
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The local connection is limited or no connection, to put it in layman's terms, it means that your broadband cable is plugged in, and you may not be able to connect due to network or telecom reasons, you can log in to your modem's exclusive IP address to set it up and save your username and password. If the local connection network cable is not plugged in, it means that your computer is not connected to the modem at all, or the local connection is not enabled, if your modem is plugged in and it still shows like this, it may be that your port is loose.
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If the local connection is not plugged in, it means that the computer network card is not plugged in or there is a problem with the network cable.
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1. If there is a problem with the network settings, check the local connection settings.
2. If the network interface is loose or oxidized, please ask someone to deal with it.
If you don't want to fix it, you still use wireless Internet access, or upgrade.
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This situation should be analyzed from the following aspects:
1. Network cable problems. The network cable is not well made, or the network cable is not in good contact with the network card.
2. The hardware of the network card is faulty.
Solution: Plug the computer into someone else's network cable and try it. If you can, it's a matter of the network cable. If it still doesn't work, it's a problem with the network card. This may be caused by the fact that the NIC driver is not enabled.
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Failure Analysis:
1. The test prompt with the network cable is not working, and the external light of the port is not on. The same is true for netizens of friends. (It is suspected that it is a port NIC problem).
2. Have you reinstalled the computer network card driver? (It is recommended to reinstall the computer system to see if it can solve this problem).
3. Whether the wireless network is good or not, put it aside first. Is there rust outside the network card port? If you can't see clearly, take a flashlight and take a closer look.
4. Please choose the second part to try, and if it doesn't work, reply and talk about it.
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How many network cards do you have installed on your computer?
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Tell me how long the line you pulled. Hehe... If it's more than 80 meters, this will happen...
The solution is to plug in a small switch in your house, and then connect it from your switch to my computer... Solve the information attenuation of the network cable that is too long. . .
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The interface is not good or the network card is loose. It should be that the interface is not good, it may be that the interface of the router is loose or the plug connected to the router is loose.
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The crystal head of the network cable is re-made to try it.
It's okay, every time you boot up, you start getting the IP locally, and then you can have a broadband connection, nothing at all.
How to disable local connections at boot.
Before shutting down, open the Control Panel Network Connections, right-click on the network you are currently using (in this case, Local Connection2), and select Disable. >>>More
According to what you said, the network card 8139 is fine, the network cable is fine, the switch is fine. >>>More
Return your network card, it's not a problem with the network card, display 10m or 100m depends on the hub you use, if you use a 10m hub (hub) will display 10m, if you use a 100m switch will display 100m. This data has no effect on your internet speed at all, and a bandwidth of 1M is completely sufficient with a 10M hub. In addition**speed does not depend entirely on your network card and broadband, it depends on which server **, if you are a Netcom user, you have to go from the Netcom server**, telecom users from the telecom server**, don't just in one**test, go to a few more large**find the corresponding server**.
1. Has your computer been touched recently? In particular, have the ADSL modem wiring and lines been moved? Please check whether the signal light on the "cat" will flash (the cat is different, the indicator light is also different, mainly dsl, adsl, line, link, @等都是宽带信号指示灯), if you want to flash, check whether the line is connected to the pair (mainly on the separator, there are three ports, each port corresponds to a line, the connection method is the bus is the incoming line port, ** machine connected to the phone port, in addition to modem or adsl connected to the broadband cat, you can also directly connect the ** incoming line on the cat to try, This can rule out the bad separator), if the connection is still flashing, check whether the line has a joint, and the signal will not be stable if the line oxidation contact is not good (the crystal head or line of the line into the cat has a problem, which will also cause the line to be blocked. >>>More