I observed the following error on a server I was troubleshooting. “A PCIe link training failure is observed in Embedded Network Device and the link is disabled.”
I love errors like this because it’s telling you in no uncertain terms what hardware device is causing the problem. In this case, the NDC or network daughter card.
Drilling into BIOS—>Devices I can see the problem. This is a 4 port card but only 2 ports are showing up.
Best case scenario is you reseat the card and the problem goes away. That’s not the case for me so my next course of action is to simply replace the card and if that doesn’t work, begin reseating the processors and inspecting the pins for damage. Because PCIe errors are related to the CPU don’t rule out problems with CPUs or the pins themselves on the motherboard.
Luckily, I just needed to replace the card. All ports are now good to go and the PCIe errors are resolved.
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