Premiere Elements 11 reinstall problems

OK folks - it has been resolved to my satisfaction and I will try to explain how (it took a while).  First, the Adobe support were good. I gave remote access to a guy who spent 1-2 hours doing all kinds of stuff I did not understand, but establishing that PE2018 worked on the "Administrator" account that is hidden within windows somewhere.  It still did not work on my user account even on "run as administrator.  He arranged to ring back the next morning, but suggested that if I could I should contact "microsoft" to check the user account was not corrupted.  I had to go into town anyway, so took the laptop back to the shop that did the upgrade, and they did their stuff, but concluded that it was an Adobe problem  Adobe rang back this morning and I spoke to the same guy, and asked him if he could help me set up a new and separate user account with administrator rights.  He did it, and lo and behold, it works.  So now I have two user accounts, one called "Standard", and the other called "Video & Audio".  Premiere only works on "Video & Audio", which is fine for me as video uses a lot of resources and I do it separately from other stuff anyway, and because all the data is kept either on shared external Hard Drives or temporarily on the shared SSD.  Adobe gave me an email for the specialist helpline (for Premiere), and I know the guy's name, so if anything changes I can get them to look at it again.  In the meantime tho', although I realise this would not work for everybody, it does work for my own workflow ... so it is "resolved".  Many thanks to all who read and made suggestions.