Type and enter devmgmt.msc to open the device manager.
So, it’s better to check the status of your ethernet connection before diving into any technical stuff. This step might feel too simple to be true, but a disabled ethernet connection often causes confusion during stressful scenarios.
If you don’t get any error prompts, your network card is working well. Type cmd and hit Ctrl + Shift + Enter to run it as an administrator. Press Win+R to open the run command box. Hence, you have to ensure your network card is working properly by pinging the loopback address. So, a damaged NIC (network interface card) prevents you from accessing the internet. Any request you make for surfing the web is first transferred to your network card, which in turn converts this request into electric impulses. It acts as a mediator between your computer and the internet. The network card must work properly in order for you to connect to the internet. Ensure Your Network Interface Card Is Working Properly If it fails to connect, your cable may be damaged and you would have to purchase a new one. So, turn on a different computer and try to connect to the internet using the same cable. If it is, then it generally signifies a fully functioning port.Īdditionally, you have to ensure your cable is not damaged or broken. This may cause the port to break down, leaving you in a frustrating and confusing situation. So, plug in your ethernet cable and check if the port is lighting up or not. Usually, when you insert the LAN cable with a certain amount of force, the port is affected by a certain amount of stress, corresponding to the force applied. Ensure Your Ethernet Port Is Not Bad or Brokenįirst things first, you have to ensure that your ethernet port is not bad or broken. However, as we are here to help you, we advise you to follow all the methods listed below until your problem gets resolved. The definitive fix for your issue could differ from other users. There are a ton of methods to fix your ethernet connection and its port in the motherboard. The unfavorable power output of the network adapter. 
Interference from Energy Efficient Ethernet (EEE).Interference from antivirus or firewall.Other than that, here are some of the reasons why your ethernet port could be not functioning. The stress from the cable on your port can also sometimes break down the connectors on your motherboard.
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