Hyper-V Networking Problems

Following the recent Microsoft Windows 10 Update my Oracle VirtualBox stopped working. In fact every time I try to launch it, Windows freezes.

So I have decided to try getting a Hyper-V working instead. I need to have a local copy of Windows 7 on my PC.

I have set it up and installed it, run all the updates, and copied over some other files I needed to install (so I had file sharing working with my Hyper-V and my own PC) *but* I couldn't seem to get my Hyper-V machine to communicate with my PC's IIS or SQL Server. It just kept saying it couldn't connect.

So I contacted my IT support to see if they could fix it and they gave me the attached script to run. It didn't look like it was really for my local Hyper-V and I did clarify that this was for a local Hyper-V but they said it run it... and now I have no networking on my Hyper-V - no internet, no file share, certainly no IIS or SQL Server.

Is there  any way I can repair this Hyper-V - I don't really want to install and set up and whole new one. And does anyone have any ideas on how I get the SQL and IIS working?

(Obviously I've added a .TXT on the end)
RDPfix.bat.txt