Drop of Ethernet connection with Killer E3100G 2.5 Gigabit Ethernet Controller

[sheapss]

Hi,

Since the start of this summer, around early June 2025, I experience sudden drops of ethernet connection, at anytime for no apparent reason

The computer acts like there's no Ethernet controller anymore, I have to restart it everytime, any type of windows help is hopeless, Restart the adaptator doesn't work etc ..

All the drivers are updated, the Killer performance suite is installed and is also completely useless in that case

My computer set :

Alienware M15 R7

12th Gen Intel(R) Core(TM) i7-12700H (2.30 GHz)

Windows 11 Family v.24H2

I don't know what to do, can you help me ?

[JedG_Intel]

Hello sheapss,

Thank you for posting on Intel Community Forum.

I understand that you're experiencing drops on connection and I'll help you identify the underlying causes of the issue. To investigate properly, please share the information below.

1. Were you able to have connection in a normal/expected performance before?

2. Are there any recent changes to the system?

3. How frequently do the drops occur (every few minutes, hours, randomly)?

4. Does the problem occur with other devices on the same network?

5. Have you tried a different Ethernet cable?

Additionally, to have a better understanding of your system configuration and components please generate System Support Utility (SSU) report. Please follow instructions here and send the report - How to get the Intel® System Support Utility Logs on Windows*

I look forward to your response.

Best regards

Jed G.

Intel Customer Support Technician

[sheapss]

Hello,

To answer your questions :

1. Yes, since I received this computer approx 3 years ago to this ummer I had no problems with my ethernet connection

2. I didn't make any change

3. It's daily, several times a day but randomly, sometimes it can be hours or it can be minutes between drops

4. No it's only my computer, it losses any trace of ethernet controller

5. Yes, I changed the cable, I changed my livebox ports, the problem stays the same

I'm sorry but the SSU file (a txt file only 879 kb) doesn't attach to my response... how can I give it to you ?

[sheapss]

Here it is, it worked after

[JedG_Intel]

Hello sheapss,

Thank you for sharing all this information. To further troubleshoot the issue, please try the outlined steps below.

1. Update BIOS to the latest version 1.35.0

2. Update the Killer Ethernet Controller driver to the latest version 34.23.7197

3. Ensure there are no pending Windows update

If the issue persists, please share speed test results for us to investigate further.

I look forward to your response.

Best regards

Jed G.

Intel Customer Support Technician

[sheapss]

Hi,

I did the BIOS update,

But for the Killer update, it says that "Killer Ethernet Performance Driver Suite UWD" cannot be installed with "Killer Perfomance Suite"

I tried uninstalling the latter, but it fails nonetheless.

I forward you the installation log

[sheapss]

Hi again,

I managed to get it to work

There's no windows update at this moment

The drops are still occuring

Speedtest result in joint file

[JedG_Intel]

Hello sheapss,

I appreciate your continued efforts. Just to confirm when you said that you managed to get it to work, are you referring to the installation of the latest Killer Ethernet Controller driver 34.23.7197?

You may also find this article helpful: Intel® Killer™ Performance Driver Suite UWD Installation Error with Killer Ethernet Performance Sui…

I look forward to your response.

Best regards

Jed G.

Intel Customer Support Technician

[sheapss]

Hello,

Yes I was referring to this driver,  I had to uninstall the Killer Performance Suite and get rid of the other Performance Suite UWD too, because it said there was an error at the installation

After that, it worked, but when I look at my drivers, the  34.23.7197 doesn't appear, (the screenshot of my ethernet controller driver in joint file)

[JedG_Intel]

Hello sheapss,

Thank you for confirming.

According to the manufacturer's website, once the driver package is properly installed on a Windows 11 system, the driver version should update to 1125.013.0424.2023. However, based on what we’re seeing, your system is still showing an older version of the driver. This suggests that the installation didn’t go through successfully.

To help resolve this, may I know if you performed a clean installation prior to installing the latest latest driver package?

I hope to hear from you soon.

Best regards

Jed G.

Intel Customer Support Technician

[sheapss]

Hi,

I just followed the steps for the clean installation, in the joint file the last update window before rebooting my computer

But at the restart, i go check the driver, and now it's an old one from 2015 .... I don't know what's going on (also in joint files)

I tried the clean installation again fr both the Killer Performance Suite and the driver, and it's back again at the 1125.24.318.2025 version

When I uninstall the "UWD" it comes back when the new Performance Suite is installed

I really don't know what to do....

[JedG_Intel]

Hello sheapss,

I'm sorry to hear that you continue to experience issues. I sent you an email to continue the support, please check your inbox at your earliest convenience.

Best regards

Jed G.

Intel Customer Support Technician

[JedG_Intel]

Hi sheapss,

I'm checking to see if you were able to review the email I sent. Kindly respond at your earliest convenience so we can proceed accordingly.

Best regards,

Jed G.

Intel Customer Support Technician

[JedG_Intel]

Hello sheapss,

I have not heard back from you so I will close this inquiry now. If you need further assistance, please submit a new question as this thread will no longer be monitored.

Best regards,

Jed G.

Intel Customer Support Technician