I have tried to set up Win 10 on my desktop,however, Win 10 conflicts with my Realtek Ethernet, I can not make the program to connect with the net, however, my lap top coneects (via WiFi) with no...

I was running the Win 10 "try it and see" system, but had minor problems so I went back to Win 7 and like you await the free upgrade. Good luck in the future.