Windows 10: Win10 home, locked out of PC after update 20H2

This is a bit of a mess thank you MS....The TL;DR - Laptop uses a local account not a PIN with user/pass since forever. Updated Windows 10 Home to 20H2 and now the only option is to login with an MS account, which can't be done. Locked to login screen. I can login via MS account or shut down. That's it. See below for details.The long version...Finally see Grandma for the first time since Covid started and find her PC really outdated.NOTES:1 Her MS account email is no longer valid as she was using a small town ISP that included email they went out of business, but she never updated h

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Win10: windows update stuck at never ending loop ?

When in win10:

• Update&security -> Windows update -> Finding update... .... .... ....

Planning to download the latest Win10.ISO (vers.1803) and manually update:
- Then wait that my ordered new SSD arrives and clone the old HDD to it.

 

PC Build Steps

Ok just because I like steps i am going to create some steps. Please give me the stamp of approval/disapproval

• Install system in case
  • Remember to connect SSD and optical to same SATA ports on motherboard
• Turn on PC
• setup HDD
• run blend test in prime95 for 30-60 min
  • run realtemp at the same time

• While in Prime95 test
  • if CPU goes above 70c in RealTemp, I have a leaky CPU
  • if my system locks up or blue screens, there is an instability in the system somewhere
  • if my system does not lock up or blue screen, my CPU is not damaged and I am in the clear!

What do you guys think??

 

Latest win10 Update 1803 cant install?

I am having a issue with this update,. I fallow the steps via windows update, DL the update, shows install. ask me to reboot pc. after reboot its start the update install pc reboot several times. On the last time, I get a message saying" Restoring windows to previous version". Then it takes me back to windows, and i get a message update could not be installed.
In windows update-control panel it shows update waiting for reboot. i click on it and does same thing. after install it restore to previous version. what is going on?
I have disable windows firewall for time being.
specs
Z97 Pro gamer MB 4790k @4.7 DDR3 2400 RAM Win10 x64 M.2 and SSD.