Causes and solutions: 1. The network card driver is not installed. You only need to reinstall the corresponding network card driver in the "Device Manager" interface; 2. The network card is damaged and you only need to install it on the PCI slot. Install an independent network card; 3. For computer system configuration problems, you only need to reset the network or reconfigure the IP address; 4. For router problems, restart the router or check whether there is a problem with the optical modem optical interface, and connect the indoor pigtail to the optical modem connector If it is loose, just plug the connector in place.
The operating environment of this tutorial: Windows 10 system, Dell G3 computer.
There is no network adapter in the device manager, what's going on? This is most likely a problem with the network card or network card driver. Let’s talk about the solution below.
Causes and solutions why there is no network adapter in the device manager
Cause 1: The network card driver is not installed
Solution:
Reinstall the corresponding network card driver.
1. Right-click [Start] and select [Device Manager].
2. Find [Network Adapter], expand it, select the current network card and right-click.
You can select [Update Driver].
Or [disable the device] first and then [enable the device].
You can also select [Properties].
#3. Select [Properties], click the [Driver] tab, and select [Update Driver].
#4. You can choose [Automatically search and update drivers] or [Browse my computer for drivers].
Cause two: The network card is damaged
Solution:
Install an independent network card in the PCI slot.
Cause three: Computer system configuration problem:
Solution:
1. Reset the network:
(1) Press [win] [R] on the desktop, enter [CMD] and click [OK] to open the [Command Prompt] window. It must be opened with administrator privileges.
(2) Enter [netsh winsock reset]. Later, there will be a successful prompt [Winsock directory successfully reset/restart the computer to complete the reset. 】.
2. IP address and DNS identification issues:
(1) Open the computer [Control Panel], click [Network Connection], and select [ local connection】.
(2) Right-click the [Local Area Connection] icon and select [Properties].
(3) Double-click [Internet Protocol (TCP/IP)] in the [General] tab, select [Use the following IP address], fill in [192.168.0.1] in the IP address, and enter Fill in [255.255.255.0] in the netmask, no need to fill in the others, and then click [OK].
PS: It should be noted that the IP must be in the same network segment as the IP address of the Modem.
If it is a wireless network, you can click the network icon on the desktop taskbar, open the Network and Sharing Center, click Local Area Connection, click Properties, double-click IPV4, and set the IP address and DNS to automatically obtain.
If you still cannot access the Internet normally after self-service troubleshooting, it is recommended that you contact the local manual customer service to report the problem.
Cause 4: Router problem
Solution:
(1) Check whether the router light is normal. If it is a light modem, generally in addition to the LOS light Except for the lights that are off, the other lights are on. You can turn off the power of the router and modem, and then turn them back on after 5 minutes.
(2) If there is an abnormality in the optical cat light, you can check whether there is a problem with the optical modem optical interface, whether the optical cat connector of the indoor pigtail connection is loose, and it can be restored by plugging the connector in place; some indoor optical fibers are bent Fold too much.
Excessive bending of the optical fiber will affect the total reflection transmission of the optical signal in the optical fiber. Just straighten the optical fiber. If some of the outdoor optical fibers are broken or the optical port of the equipment room is faulty, you need to contact the staff to report the fault. deal with.
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