The Nvidia driver will code 43 if it detects a hypervisor. (they want you to buy quadros), the 4970k has 4 Just click the load driver button, navigate through the iso to find Windows 7 or 8.1 and select the...
For reference, this kind of problem is avoided on QubesOS (another, Xen-based, hypervisor system) by routing all traffic through another VM that entirely owns the network hardware. I run my Wireguard on that VM. The host OS image, dom0, also routes its network traffic through that VM, to get updates.