Article ID: 000033682 Content Type: Connectivity Last Reviewed: 11/21/2022

How to Fix Device Not Found Issue with LAN on Motherboard (LOM)

Environment

Windows Server 2016*

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Summary

Steps to troubleshoot the system if the network card is not recognized or not available in device manager.

Description

Embedded network connections are not working, and show a yellow triangle in Device Manager.

Resolution

Based on the information available in the readme notes for the Intel® Ethernet X722 drivers, the devices based on the Intel® Ethernet X710, XL710, X722, and XXV710 controllers may fail to load with a yellow bang error, on any version of Microsoft Windows* Server.

This may be because the device is connected to a switch that is not advertising traffic class 0.

To resolve the issue:

  1. Disconnect the device from the switch or configure the switch to advertise TC0.
  2. Restart the system.