Windows 10: My PC is unable to recognize the Ethernet connection. How do I fix it?

Hello, I already looked for help everywhere, reinstalled all my drivers, reinstalled windows, restarted my internet router, I turned it off for 2 minutes, then on again, I even updated the BIOS, but still...Whatever I do I can't fix this problem, I replaced my Ethernet cable twice, and I can see that there is internet connection working just fine due to my cousin's laptop being able to connect to the router via WiFi.My PC will randomly disconnect from the router despite being directly plugged to it via the already mentioned Ethernet cable, and it will do this everyday, sometimes even 5 times a

:)

 

New Windows 11 Professional PC not recognized by router with wired ethernet connection?

Hi

Welcome to Microsoft community.

It sounds like you've already taken a thorough approach to troubleshooting the issue. Since you've ruled out many common factors, I'll provide a few more steps you can try to diagnose and potentially resolve the problem of your new Windows 11 Professional PC not being recognized by your router with a wired Ethernet connection:

1. Driver Update and Reinstallation:
   
   • While you mentioned that you installed the Realtek Ethernet driver, it's worth double-checking if there are any updated drivers available from the motherboard manufacturer's website. Sometimes, motherboard-specific drivers can help ensure compatibility.
     
2. Static IP Configuration:
   
   • Try assigning a static IP address to your Windows 11 PC. This can sometimes help in situations where automatic IP assignment is causing issues. Configure the static IP within the Windows network settings and ensure it's within the same subnet as your router.
     
3. Network Reset:
   
   • Open the Windows 11 "Settings" app.
     
   • Go to "Network & internet" > "Status."
     
   • Scroll down and click on "Network reset."
     
   • Follow the prompts to reset your network settings. This will remove and reinstall all network adapters and reset your network settings to their default.
     
4. Driver Uninstallation and Clean Install:
   
   • Uninstall the Realtek Ethernet driver completely.
     
   • Reboot your computer.
     
   • Install the latest driver you downloaded from Realtek or your motherboard manufacturer's website.
     
5. Network Troubleshooter:
   
   • Run the built-in Network Troubleshooter in Windows 11:
     
     1. Right-click on the network icon in the system tray.
        
     2. Select "Troubleshoot problems."
        
     3. Follow the prompts to let Windows attempt to diagnose and fix network issues.
        
6. Consider Another Network Adapter:
   
   • If the issue persists, you might consider getting a separate Ethernet PCIe adapter (a different brand) and installing it in your PC. This can help determine if the issue is specifically related to the Realtek adapter.
     
7. Try a Different Router or Connection:
   
   • If possible, try connecting your PC to a different router or network to see if the issue persists. This can help narrow down whether the problem is related to the PC or the network.
     

Remember that network-related issues can be complex, and the solution might require a combination of steps.

Please feel free to let me know if you have any further updates, thanks.

Best regards

Derrick Qian | Microsoft Community Support Specialist

 

My reliable ethernet connection no longer works

Hi Marcia,

To better understand the query, please answer the following questions:

• After restarting is your computer in normal mode or not?
• Are you getting any error message?

I suggest you to reset the modem\ router and check if the Ethernet connection works or not.

If still the issue persist then I suggest you to follow the steps from the below article
“Fix network connection issues” and check if it helps.

Fix Wi-Fi connection issues in Windows - Microsoft Support

Please get back to us with an update on this issue, we will be happy to assist you further.

Thank you

 

Computer not recognizing Ethernet cable

Hi Vijay, I appreciate your help.

I will try each step even if I've already done it, just to make sure, and post my results.

A. When I troubleshoot internet connections, it tells me “Plug an ethernet cable into this computer” and says my cable might be broken or disconnected. However of course i have tried a different working cable with no luck.

when I troubleshoot network adapter, it says “plug an Ethernet cable into the network adapter ‘Ethernet’” which of course has already been done so it is not recognizing it.

B. I tried every suggestion/step listed (except for the wifi troubleshooting since my computer doesn't have wifi) and none of them worked.

C. When I run the windows update troubleshooter, it tells me “download and install pending updates” (Maybe it is not up to date because I tried reinstalling windows 10 to see if that would fix the internet, but it did not. I updated it like last week or
something like that) but of course I can't download the updates without internet. If I click “apply this fix” it tells me to plug in an Ethernet cable. But i believe windows 10 was up to date before this issue even began because I updated it just a week ago.

D. I do not understand this step. The guide is confusing to me. It also appears that I have to download tools in order to do this repair. I cannot download anything because my computer cannot connect to the internet. I don't have a USB flashdrive. I did
try reinstalling Windows 10 though and it did not help.