Bought a 82574L Single Gigabit LAN port on a 1x PCIe NIC.
From day one, it was playing up oddly, would from a cold start boot up OK, but a reboot it would get Code 10 errors in Win8.1
On a UEFI BIOS there is an arror at boot saying can't continue to load boot ROM.
Tried NVRAM diagnosis but...