Windows 10: My Ethernet Keeps Turning Off and On and Is Extremely Slow

I had recently gone to my friends house and I brought my PC over for a lan. I had read that I can share internet through his PC with an ethernet and when we tried it didn't work. After I got home my ethernet started to stop working and It would keep turning on and off and I have no idea why. I tried a brand new ethernet, different settings, but I don't know what is causing this problem. When the ethernet would shut off, I would run the diagnostic and it would say that there is no ethernet plugged in, but then a few seconds later it would turn back on with no problem


Something I noticed that was off is that my adapter is called Realtek PCIe GbE Family controller but all the other people I talked to, their pc's didn't say that. I'm not sure if that's how it always was but it seems like it isn't the right adapter. My brother and I use the same ethernet extender but his runs without problem so I don't think the extender is the problem.


I had played with my settings and watched many different videos on possible ways to fix it. When I put the Speed & Duplex on 10 Mbps Full Duplex, the ethernet would work fine however when it was on auto negotiation, the problem would occur. Even when I have the auto negotiation on, my max Mbps would only be 10-20, when before it would be up to 400-500 Mbps.


I'm not sure how this occurred in the first place and I'm not sure how I fix this. Any advice or help I could get would be highly appreciated.

:)

 

Ethernet Connection (slow internet after upgrading to win10)

Hi,

Thanks for the response. The suggestions you provided are also some of the "fixes" I tried before with no luck. But I did try them again and it still did not resolve my issue.

For the troubleshooting, nothing came up because there IS connection. Just extremely slow. There's no errors or any msg that pops up. The problem is that the internet connection is extremely slow at initial start or after the PC comes out from sleep mode.
Once I disable/re-enable the ethernet connection, speed is great.

If you have any other suggestion, I'd greatly appreciate it. Thank you!

 

Extremely slow pc suddenly windows 8.1

Windows 8.1 suddenly my pc is extremely slow any suggestions please

 

Windows 10 ethernet suddenly extremely slow

About a month ago, I assembled a new desktop build. The ethernet was initially very slow, but installing the Realtek ethernet drivers fixed that.

About three weeks ago, I shut the computer off. I came back to it yesterday, and upon booting it up, the ethernet was extremely slow (connection should be 1Gbps, but speedtest showed <1Mbps). I tried a number of troubleshooting steps, but at one point I
rebooted into safe mode, and the problem disappeared. I restarted my computer a few more times, and it still worked fine.

Today, the problem is back. However, now speedtest reports about 10 Mbps, though it's still far less than the speed I should be getting.

I have tried:

- Rebooting, many times

- Starting in safe mode with networking

- Verifying Windows updates are fully installed

- Uninstalling and reinstalling the ethernet drivers, both via device manager and manually through the Realtek installers

- Installing an older version of the Realtek driver

- Updating video card drivers

- The commands at The Nuclear Option: Resetting The Crap Out Of Your Network Adapters in Vista

- Verifying Windows reports the speed as 1 Gbps

- System restore to before I first powered off my computer

- Trying the ethernet cable/port on a different computer (it works with the other computer)

- Using Windows to reset my network settings

- Trying both public and private network settings

- Disabling large send offload for ipv4/ipv6

- Virus scanning with Malwarebytes

- Disabling Malwarebytes

- Windows Defender is disabled

- Disabling firewall via command prompt

- Checking event viewer - no suspicious messages

- Checking network usage - programs consistently show < 0.1 Mpbs in task manager, no active windows update downloads

At this point I am at a complete loss for what else to try. I am in a dorm so I can't directly access the router. My motherboard is an ASUS PRIME B450M-A.