Cannot Access Windows 10 O/S

I am unable to access Windows 10 on my primary computer. I was trying to fix a problem with Quick Assist and was following recommendations from https://www.thewindowsclub.com/what-is-clean-boot-state-in-windows. The advice was:-


To enter Clean Boot State, type MSConfig in start search and hit Enter to open the System Configuration Utility. Click the General tab, and then click Selective Startup.

Clear the Load Startup Items checkbox, and ensure that Load System Services and Use Original boot configuration are checked.

Next, click the Services tab. Select the Hide All Microsoft Services checkbox. Now click Disable all.

Click Apply/OK and restart the computer.

This will put Windows into a Clean Boot State.

If the clean boot helped you fix the error, fine! Else in the General tab, also click to clear the Load System Services checkbox, click Apply/OK, and restart.

To configure Windows to use the normal startup state, simply undo the changes.

Unfortunately, when I restart I get to the Windows 10 front end screen but no means of logging in to my profile.

Can anyone tell me how I can log back in again to change the msconfig settings?

 

https://www.maketecheasier.com/windows-10-failed-to-start/
Check these suggestions out.
Did you make a Recovery disc?