Problems Updating to Krypton

Hi
I’ve been a user of Kodi 16.1 Jarvis for some 6 months now.
I use it on my windows 7 64 bit pc. and get a great deal of pleasure checking out “Third Party” apps and builds. Sports fan basically.
With release of Krypton I decided to update but have had no success so far.
I attempted to install Krypton over my Jarvis but at start up after installation I get a blank screen and the standard windows “Kodi Has stopped working” message when I start up.
I decided to uninstall and re install Krypton but get the same problem message.
I even tried fresh start before installation but without success.
I have re installed Jarvis and it runs without any problems, tried to update again, back to the same problem.
I don’t claim to be any kind of Kodi expert, Basics Only, I’m afraid.
Classed now as a pensioned senior citizen I wont get much more senior if I can’t relieve this frustration.
Please can anyone point me in the right direction.