Question Plugging in LAN cable causes crash

[MrHoffnung]

Hello everyone.
I currently have the following problem: When I connect my LAN cable to my computer, the computer crashes.

According to the Event Viewer the error is:
https://paste.gg/p/anonymous/188ec3f3b01447ad99f442375ecce7fb (the XML representation of the error in the event viewer).

When does the error happen?
- Every time I plug in my ethernet cable while my PC is running
- If I plug it in before start, the PC is not even starting

What I tried:
- Installing all updates and drivers
- Reinstalling
- Update & BIOS Reset
- Update of LAN Drivers

My hard- / software:
- Gigabyte B560 DS3H v2
- Intel i5 11400f
- 16 GB RAM
- RTX 4070 super
- Windows 11

I hope someone can help me. Thank you for your time.

Your Leo

 

[helpstar]

try different lan cable

update bios, reset bios

 

[MrHoffnung]

try different lan cable

update bios, reset bios

First of all, thank you for your answer. Unfortunately, neither of these worked. I have already tried a different LAN cable myself. I have now updated the BIOS and loaded the standard settings using "Load optimized defaults".

 

[Secret-Squirrel]

Unfortunately the event details you posted simply say that the PC rebooted or shutdown unexpectedly.

The symptoms you described, and the steps you've taken to resolve it, sounds like it's a hardware fault.

As a workaround you may want to consider a USB Ethernet adapter. There's no 100% guarantee that it'll work but you may be able to return it for a refund if it doesn't.

 

[bill001g]

That is very strange. although not likely to do anything what happens if you plug a lan cable into the computer and not connect anything on the other end. Does it matter what it is plugged into.

What happens if you just boot into the bios screen and then plug the cable in. Does it crash in that condition or only when you have windows loaded.

All I can think of is the ethernet chip is turned off and when you plug a lan cable in the ethernet port comes on. Maybe there is some issue with power that the ethernet chip is causing the motherboard to take too much.

I suspect the easiest option is going to be to use a PCIE ethernet card if you have a extra slot or a USB one, you want to use USB3 ports for gigabit speeds.

 

[MrHoffnung]

Unfortunately the event details you posted simply say that the PC rebooted or shutdown unexpectedly.

The symptoms you described, and the steps you've taken to resolve it, sounds like it's a hardware fault.

As a workaround you may want to consider a USB Ethernet adapter. There's no 100% guarantee that it'll work but you may be able to return it for a refund if it doesn't.

When you say it could be a hardware failure, what is the most likely cause?

 

[bill001g]

You will seldom know the cause of why some electronics fail. Could be some part just dies because it had some defect when it was manufactured and just finally got bad enough to cause a issue.

There is nothing on the motherboard you can replace. The cheapest thing to try is new ethernet card card but if there is a problem on the motherboard say related power regulation then the new card might also cause the machine to not boot.

Pretty much you are left with blinding replacing stuff to try to determine what it is. I would try the ethernet card first since that is cheap. Then you might consider the power supply or the motherboard. Once you start down this path you have to ask is it worth putting money into a older platform or should you for example just keep your video card and upgrade everything else.

 

[COLGeek]

What is the PC connected to? What device via the ethernet cable?

 

[helpstar]

check if the back panel (i/o shield) is correctly installed and no spring sheets are touching the inner contacts of USB or LAN ports

maybe take some pictures of your build from all sides, outside and inside. upload to imgur.com or similar

I would disassemble the motherboard from the case and breadboard it on a non conducting surface like wood or cardboard (not the ones of the packaging, foil might be conducting). Try minimum system config to boot with a lan cable plugged in. (PSU, motherboard, CPU with cooler and fan, GPU, monitor in GPU, keyboard, one RAM in slot B2)

 

[COLGeek]

check if the back panel (i/o shield) is correctly installed and no spring sheets are touching the inner contacts of USB or LAN ports

This is an excellent suggestion. A picture of the back panel (where all the cables attach), might be enlightening.

Anything protruding into a port (like those little grounding fingers) can cause this. A misaligned I/O plate may also cause a short condition.

 

[Secret-Squirrel]

When you say it could be a hardware failure, what is the most likely cause?

As mentioned already, it could be lots of things.

If you don't have the experience nor the inclination to fit a PCIe card, then I'll repeat my suggestion from earlier - get a USB gigabit Ethernet adapter, plug it in and it'll probably work - job done. If it doesn't and you can't get a refund then you'll have wasted just £8.99.

I bought the model above recently and it's a well made bit of kit that works well.