The NIC lights up green and the yellow lights don t turn on, and the local connection is restricted

Summary. First of all, check whether there is a problem with the network cable, you can use a line tester, or you can find a place with a network in another place to try. In addition, whether the electronic network equipment is working properly, whether the router, fiber modem or hub is working properly.

The above content is eliminated one by one, to determine that there is no problem, or can not go online, it is recommended to contact the network ** business to come to the service.

The network card is green and yellow, and the network is not connected, what's going on?

First of all, check whether there is a problem with the network cable, you can use a line tester, or you can find a place with a network in another place to try. In addition, whether the electronic network equipment is working properly, whether the router, fiber modem or hub is working properly. The above content is eliminated one by one, to determine that there is no problem, or can not go online, it is recommended to contact the network ** business to come to the service.

The status is that the computer is connected to the upper device normally, if there is a router, it should not be dialed, because the network of the router is not connected. If there is no router and the computer dials up directly, the operator's optical modem is not connected to the network.

Reason: The lights of the network card and the router are on, because they are physically connected, but because the driver is installed incorrectly, the software Xiechang code cannot be connected, so the local connection shows a red cross, and the reinstallation system sometimes installs the driver of the network card by mistake.

Solution: Set the NIC IP to automatically obtain the IP and automatically obtain the SNC, log in to the router settings interface, and turn DHCP on. To change the network cable, the computer and the router should be connected with a direct wire, and some are also called parallel cables.

Possibility: 1. Your computer does not support automatic adaptation of positive and negative lines, and the hub generally does not support it, and you happen to use a crossed line. If so, just change the network cable.

2. Maybe both the hub and your network card are adaptive to the network speed by default, and both sides are constantly adjusting the rate of catching each other, but they can't connect. If so, setting your network card to a fixed rate (e.g. 100Mbps duplex) will do the trick.

3. Set it to a fixed IP and conflict with others? (This is unlikely).

If the green light is not on, it is not connected to the network, or the network communication is not smooth, and you need to check the network port or network cable.

Internet connection is not available.

1. When the machine is turned on, touch the network card chip with your finger to see if it is hot, and pay attention to whether the soup hand is not hot. If it is hot, it means that there is a problem with the network card chip, and it is recommended to install an independent network card.

2. After excluding the factor of 1, try to update the driver, if you can't see the network card driver in the system hardware management, it means that the system has not found the network card, then it is recommended to reinstall the operating system once to eliminate the factors of the operating system. If you still can't find your network card after reinstalling the operating system, you can be sure that your network card is broken. You can directly add an independent NIC block.

According to my experience, if it is an integrated network card (referring to the motherboard with a network card, not an additional network card), the online neighbor can not see the local connection, you can open the device manager to see if there is a network adapter, if there is, see if there is a driver, if the driver is not installed, a yellow question mark will be displayed in front of the network card model, if not, the network card is bad.

Get the drive right first! The local connection came out, and there was a data exchange, and the green light flashed!

The most frustrating thing is that this exact same situation also occurs in my virtual machine.,I just happened to encounter this problem a few days ago.,In the end, the night is in **.。

Directly change the network cable head, this analysis is not as simple as directly making a head, it may be that the crystal head is in poor contact, sometimes good and sometimes bad.

The first thing to say is that this basically has nothing to do with the DU network card model.

According to what you said, the network DAO card light is on, and the connection of this version is indeed the right red fork; The network cable connects to other computers to access the Internet normally. Then it can be said that there is a problem with the computer.

It is more certain that there is no problem with the network, the problem is with your PC.

You can reinstall your network card drivers. This is from the software side. On the other hand, you have to check whether your network card has been plugged in. Another important method is that you can find a different network card to try if you can access the Internet, if you can access the Internet, then there is a problem with your network card.

Well, that's all, I hope it helps you.

Open Neighbor to confirm that you have several network links.

Reinstall your network card drivers.

Make sure you have the NIC driver installed.

Hello: The network cable can be plugged into someone else's computer to access the Internet, which eliminates the problem of the network cable, and the greatest possibility is on your network card, or the router that is surfing the Internet.

Here are 2 solutions:

1.Uninstall the driver of the network card and reinstall the driver with the driver wizard.

2.Take the Internet equipment (such as a router or cat), take it to a friend's house, use a friend's computer to connect to your Internet device, see if you can go online, if you can go online, it means that the Internet equipment is fine, if you can't go online, it means that there is a problem with the Internet equipment, it is recommended to take it for repair.

1. Software problem: remove the network card driver and reinstall the latest suitable driver.

Software conflicts, bad drivers, etc.).

2. Hardware issues:

1. Bad network cable: Try to use other good network cables, plug it back in, and try. (Broken crystal head, bad line) 2, bad network card: buy a new network card and install it, about 20 yuan. (The network card chip is damaged, and there may be sudden power failure, lightning split, etc.).

Then you have to see if the network card is disabled!

Check the network cable and crystal header.

This means that the router is not well connected to the anchor, you should reset the anchor and route, and if you reset the route, it should be fine, I hope it will help you.

The indicator light is not flashing, is the router power not connected?