Windows 10: How to fix a no cursor black screen after trying all provided options?

I am running a desktop machine that is suffering a constant unresponsive black screen just after the Window's logo on bootup. On a secondary drive I have booted up another version of windows copied from a laptop and have access to all previous files but I still cannot get my original version of windows to boot.

:)

 

Black screen with cursor


Have a Gateway SX2800-01 which has (had) Windows 7 Pro installed. Finally gave in to Window 10 upgrade prompting and said yes. Ten installed well to my surprise, it ran for several months. Then on an update it restarted to the sign in screen, password, then black screen with cursor.*Sad I found TenForums and possible solutions with my laptop.
First try - partial boot 3 times - brought up auto fix - after running - chose restore point I had set in - IT WORKED.
I updated the video driver just in case that was a cause of problem.
*Sad The install update came up again. I held off for weeks. Finally gave in. Restarted with sign in screen - then black screen.
*SadSecond try - 3 partial boots - fix screen options - one available earlier restore point showing -tried - DID NOT WORK THIS TIME- Black screen again.
*SadThird try - tried option 'start to safe mode' - Sign on screen - password -still BLACK SCREEN
Tried (from TenForum) blind keystrokes to activate second monitor. It worked evidenced by cursor showing on second black screen (off -no cursor on second screen). Tried removing monitor and devices. The only option left from partial starts and auto fix, is to restore toan earlier Build - but I believe will likely give me another black screen.
Observations - notification windows pop up on black screen (example: "your antivirus has been updated"). Ctrl alt del opens 'task manager' window over black screen. Tabs work showing active activities of files/programs.
I don't know about fast start mode. Can that be accessed from task manager? Or something to get my desktop back?

 

Black screen after 'Starting Windows' sequence

Sounds like the old... windows black screen of death.

Try this quoted from "VisiHow" article "Repair Windows 7 Black Screen of Death":

They, also, have some other options there, too.
Google search and you will find a lot of the "Windows Black Screen of Death with cursor" fixes.