I do have Imaging software and emergency USB boot media for recovery. Once again many thanks for your helpful advice :)

I followed dalchina's advice and deleted the surplus partitions on Drive 1. Then ran the update tool again, I now have Windows Version 1703 15063.332. I didn't uninstall or disable Avast or ASC. ...

I've tried to post detailed results but for some reason I can't so I've put them on one drive here Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.
My windows...

Avast and other 'system tweaking utilities' were removed to no avail the same issue arose

Several times I have downloaded and installed CU. The installation goes well and after a little while I get the welcome screen and privacy settings, then CU is running perfectly, until I reboot....

13 Successful updates problem free 1 PC installs the update has issues shutting down and restores previous version on next boot.

Despite numerous web searches suggesting various complex fixes for our issue with Roaming Profiles the solution was remarkably simple. I'd like to say we found the answer by doing a deep and...