@ TheKochs - I did the updates literally last night and then restarted the machine within 5 minutes of the updates finishing, that is when all this started, so the 9th would've been a good choice for a restore point, but sadly, hasn't worked.
As for the "removing-Avast'from-startup" fixlist EssexBoy just gave me, trying that one now.........and it didn't work, fix was successful (fixlog attached), but when trying to boot Windows normally now, I end up with the same symptoms as before, but the screen is black.
As for trying it in Safe Mode, it goes down the list as far as Mup.sys, trying to boot SPTD.sys, and then it also freezes there.
