win 10 includes drivers for most of your hardware including most LAN so all you would need to do afterwards is look for updated versions.
IS your computer a brand name or custom build?
If brand name, many of them have a support website you can use for the PC model that includes an auto update function
If its custom, what motherboard?
Almost all motherboard makers have a website which offers support for the mdoel, this will include LAN drivers so you are best going to it to get them.
If you have an add on wifi card, you would be best telling us what it is as I can go find a driver for it.