Hi, thanks for choosing Dell. As you may have well expected, replacing the motherboard seems to be the only option here based on the error (And the NIC isn't recognized either, so you can't even try disabling it on BIOS) you're seeing. I'm sorry I can't be of help this time. 
Hello everyone and sorry for any grammar errors, not my primary language and this is kinda edge case so please bear with me  As title says -  my machines suffered from a ball lightning damage. Long story short - i managed to fix most of the damaged stuff, and replaced the cheap-ish equipment. Due financial reasons i currently cannot afford to buy another motherboard for the T610, on top on that there is none available anywhere within reasonable distance near me. I do however have the equipment and skills to fix it. After some fiddling around i managed to bring it back to life by removing the integrated nic IC (the bcm5709cc0kpbg chip got toasted as expected and it was shorting the MB).  While diagnosing the machine i had to do the minimal boot attempt several times, and after all other stuff got properly detected (all ram modules, the two cpus etc) after POST i get "PCIe Training Error: Embedded NIC1". All of the solutions i found online assume there's some pcie problems / incompatible hardware, but in my case it's obvious that the chip is not there. Is there any way i can boot the machine without the integrated NIC ? I have some options, like plug a random broadcom lan card into the PCIe and pray, or probably buy a PCIe card with the same chip, remove it from the card, ball it and replace it on the MB, but that's something I'd like to avoid at near-all cases, because I'm fairly sure there's other damages from the lightning (as expected). Any advice (apart from "just buy another mb") are more than welcome , and thank you in advance!
Power edge T610 lightning damage