I did finally catch a break and have a relative bring me a failed update. Turns out they had ignored what the machine was telling then on every boot. The clue was it was saying to press a key to skip disk checking. Turns out they din't know that was a sign.
So lucky for me they let me work it before they went on the web for advice. The fix was very simple. I logged into the spare admin account (with Windows you must have this since about 2000) and then run the next command.
CHKDSK C: /F /R /X
The next boot finished the chkdsk and the update finished, the video mode went back to normal and the machine worked normally.
HOWEVER, there are a lot of folk that maintain that we shouldn't have to do or know this stuff.
Received a mandatory Win 10 update but wondered why it took an hour to download before shutting down. When starting up the next day, it took an hour to install. Should have never started.
Now everything takes so long to start that I've kept it on sleep for the last two days and not take a chance in closing it down and not being able to open. The start button no longer works, IE won't load, etc. etc.
Haven't heard the update being this bad from Microsoft, even on their support site. It's made my Toshiba laptop almost unusable. HELP!!