Have you setup NPM in settings Virtualization polling settings already under node and group management? When you added the node to be polled did you use snmp and also check poll for virtualization? I use vmware but I think it's very similar for hyper-v.
Since this is Hyper-V, when we poll the node via WMI, it will show Hyper-V along with it. Same like it shows App Insight. But, Hyper-V polling works only with WMI unlike App Insight which will work with SNMP as well. As I mentioned it does not show Network Adapters when using WMI