Dell Inspiron 15R SE 7520 BLue Screen of Death

I have been having issues with a blue screen of death on windows 10.  The computer is in continuous loop of the blue screen of death.  I installed windows 7 professional from my dads back up CD and the computer worked fine but I have no CD activistion key and WiFi wouldn’t connect.  Then I tried to reinstall windows 7 home edition because that was the original windows that came with the laptop but upon installing the blue screen of death occurred.  I had been connected to WiFi at that point.  Also note I been using an SSD that replaced my old hard drive that was originally in the laptop.  So in short story short I believe it’s a software issue and would like to ask for any recommendations to why I’m crashing on home edition but not the polrofesional and if there’s any solid fixes.