Used Autoruns but unfortunately it seems that you have to have some knowledge about these things before you start to disable startup items. I disabled groups of items with no effect until one of the deleted items caused my PC to not be able to start up. The PC did a self examination (clever things, computers!) and gave me a few options, one of which was to revert to an earlier build, which I did. I am now back on Windows 7 and everything works perfectly, including a few other items I had problems with on Windows 10. I think I'll stay here.