That’s a shame Alan. I can’t understand why you are having such a tussle with the installation. There is just one thing to install (SDRUno) and it brings all the drivers etc with it and installs them. Quite why it won’t work in your case is baffling.
I’ve had three models of RSP, an original ‘1’, then a ‘2’ and now a Duo and they all installed in one shot without any snags on my W8 laptop, then on my new W10 laptop. Still, that’s computers for you.