Network cable miner light is not on

1. In the boot state, if the port of the network card is on, it may be the problem of the network cable or the network card. If several computers are not on, it is the problem of the network cable. The problem of network cable is the problem of crystal head.

2. 1. Try changing the cable. If there is a problem with the cable head, it is likely to be unstable
2. If a good network cable is replaced and the situation is still the same, it may be the problem of the network card. You can try the following:
2.1 update the network card driver. If this is not enough, then
2.2 repair the network card

computer crash may also be caused by the system or some programs accessing the network with large traffic. If not open download, then do not rule out the possibility of the virus. This can be seen by monitoring. On the taskbar, right-click to open task management. Go to the Networking tab to see the network situation. You can also download 360 antivirus software for monitoring.

3.

When the network cable is connected to the switch, the light does not light up. Generally, there are the following possibilities:

1. The device at the other end of the remote connection network cable is turned off, but not turned on

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3. The port of the switch is damaged or in poor contact

4. The network head on the network cable is not made correctly, and it is not made according to the standard line order, resulting in the inability to connect

5. Another possibility is that the switch is not configured well. You can reconfigure the switch to see if it can be used

the operation steps of correctly configuring the switch are as follows:

1. First, connect a PC and a switch with cables, as shown in the figure below

4. Sometimes we will encounter the computer network cable interface light is not on, so what is the reason for this? Today I would like to share with you the solutions in detail

reason 1: there are several situations when the computer network cable interface light is not on. The first is your network cable is not good or not connected well. Check whether the network cable is broken or not. If not, please pull it out and plug it in again

reason 2: local connection is disabled. If you are sure there is no problem with the network cable, you can right-click the network neighbor on the desktop and click properties. If you see that the local link is gray, it means that the local link is disabled. You can right-click the local link and click enable. So your local link is enabled

reason 3: the NIC driver is not installed properly. Download the software to test the installation of the computer driver, check it and update the network card driver

reason 4: there is a problem with the network card

if you open the network neighborhood property and find that the local link is marked with an exclamation mark, or not, and you right-click to enable the local link or not. You can look down to see if the network card indicator on the back of your host is on. After you finish the fourth step again, you still have an exclamation point. There may be something wrong with your network card

if you don't have an integrated network card, you can turn off the host computer and power it off. After the network card is removed, plug it in again. Power on. In most cases. If you are an integrated one, you can plug it in with a network card. If the above steps are useless, it is recommended that you call your network provider

reason 5: the computer cat is broken

for a telecom cat, take my Telecom cat as an example. As shown in the figure, power is the power indicator light, and the indicator light on means normal. Run is the running light, flashing means normal. DSL is a telephone line interface. If it's always on, it means normal. If it's flashing or not on, it means that the telephone line is not connected properly or ADSL is not normal. Lan1-4 represents the network card interface, and normally on means normal. ITV is the network TV interface, WLAN is the wireless interface number, WPS is the wireless verification, and USB is the external USB device.

5. 1. Check whether the network cable is smooth; 2. Check whether the network card is smooth; 3. Check whether the broadband signal of the cat or router is normal. If there is a fault in the above three points, the network cable interface light will not be on.

7. When the network cable is connected to the switch, the light does not light up. Generally, there are the following possibilities:
1. The device at the other end of the remote connection network cable is turned off, but not turned on
2. The network cable is disconnected somewhere
3. The port of the switch is damaged or in poor contact
4. The network head on the network cable is not made correctly, and it is not made according to the standard line order, resulting in the inability to connect.

8. First of all, I'm also a rookie. Let me talk about the possible reason why the green light is not on! 1. Your network card is broken. 2. Your crystal head is not inserted properly. 3. There is something wrong with the line. 4. Your network cable is connected to other devices (cats, routers, etc.) by mistake. Solution steps: 1. Check whether all your sockets are connected wrongly (and stably). 2. Move your chassis to your relatives, neighbors and classmates (those who have computers) nearby to see if it doesn't light up after you replace it If it's on, it's 1. Your home interface is wrong. 2. If there is a problem with the circuit in your home, it is suggested to call China Telecom or China Unicom to help you repair it.) 3. If it doesn't work, it is estimated that there is a problem with your network card, then go to the place where the computer is repaired

9. First check whether your hardware equipment, network cable and routing, cat, are in good condition, whether the line is inserted correctly, or whether the network cable connector is itchy. Call the service desk to check whether the computer room is normal. If the hardware and external network are normal, check the network connection on the computer www.sxzj168.com Whether it is set well, whether the network card is turned on, I hope I can offer you a reward as soon as possible Hee hee

10. If the router or modem is working properly, the network cable is out of order. Change a network cable or make a new crystal head for both ends of the network cable. If possible, use the network cable tester to test whether both ends of the network cable are connected. It should be that the crystal heads at both ends of the network cable are broken

check the line connection

make sure your NIC driver is installed or not; Management -- & gt; Device manager, see if the "network adapter" has a yellow one
if it's yellow, it's recommended that you change to a computer that can be connected to the Internet, download a network card driver, and install it

2. If you don't see this item, your network card is broken. If you go outside and buy a network card, it will cost about 20 yuan
after installation, please refer to step 1

first, the computer itself problems, network card problems, drive off, or network cable problems, routers and other causes can not access the Internet, one by one. 2、 Computer virus, ie was maliciously modified, ie error, etc., can be antivirus, with Huangshan ie repair repair. 3、 The data packet is missing. There may be a problem with the crystal head. Redo the crystal head. 4、 The route is not enabled DHCP, the IP cannot be obtained, the network is restricted, or someone in the same network uses the executive officer to cause interference. 5、 The network speed is slow, it may be poisoning, or someone in the same network is seriously occupying resources, such as BT, download, etc. 6、 QQ and other instant messenger software can log in, or open a web page, it may be that DNS is not set well, please set it according to the local public DNS address. 7、 Due to system damage and other reasons can not access the Internet, please re install or restore the system. 8、 After connecting to the Internet, you can't open the web page. There may be something wrong with the network signal. Please contact the local broadband access department for inspection. 9、 If the router is overheated, please turn off the power and try again after 15 minutes.