You have the controller enabled in BIOS, yes? I would assume so since you have a device manager entry. Code 10 means wrong, or incorrect drivers typically.https://support.microsoft.com/en-us/mats/hardware_device_problems
I haven't seen a code 10 in years. It is more likely the lan chip. But again it could be windows 10. We are see many problems with this series mother board. Did you install the chip-set driver? That might help to fix the lan chip. Not saying it will work but something to try.
Hey MrB.Reviewing your thread in case I missed something... Like can't run that tool because you don't have a network connection. (sorry about that). The tool was for W7 which happened to be the machine I was posting from. I have too many PC's unfortunately. Well, the way my wife sees it anyway Intel Ethernet Connection (2) I219-V The (2) there does tell us you have installed this device more than once.But why it doesn't appear in BIOS, Page 34 > Intel(R) Ethernet Network Connection is good reason for your concern. After flashing did you Load set up defaults? If not please try this. Don't regret not buying Asus or MSi. I can assure you (after using Asus exclusively for 13 yrs) you aren't missing anything. They all have issues and if you haven't had one until now consider yourself extremely lucky.