Solved!!
been researching this since upgrading and updating and vista machine on the side ... tried the services and startups, no good, tired xbootmgr from the toolkit, just a big gap after login and black screen reaching desktop .... triend the disabeling rootkit boot, protection and delayed load for avast, still no good .... from the link tried adding AlwaysConnectedWaitSeconds=360 to the INI file ... Little better performance .... Wait for it ....... Disable Streaming Updates under > Settings > Cloud Services ....
Booted stright to desktop as expected without the black screen delay ...
your all welcome, I only post because I didnt see the answer elsewhere ... good luck