Windows 10 - finally worked on 4th install

I installed Windows 10, noticed that NIS had disappeared.  I downloaded and ran the Windows10NortonUpgrader.  It looked like it was installed, but it wouldn't start.  Next I downloaded and ran the remove and reinstall tool (NRnR).  Still wouldn't start.  I downloaded the Remove Norton tool and removed NIS.  Then downloaded a new NIS and installed.  Still wouldn't start.  I let the laptop rest a while and then ran the downloaded install again.  FINALLY, it worked!  Whew.

I did all this on my "extra" PC.  I think I'll wait a few months before I install Windows 10 on my main computer -- maybe Norton will have the kinks worked out by then.