Then the easy solution is to install Windows again using the installer made with Microsoft Media Creation Tool. Make it and boot from it.
I installed Build 1909 - last roll up and now I can' t boot to lock screen to put in my pin. I have a Win 10 Pro Build 1909 with i7 - 16 gig of ram with an edge browser.
The last thing I did that day was windows download, Windows download notified me of an update so I installed it, Now the PC won't boot at all.. Windows came up once and asked me if I wanted to reinstall windows but I need an adminestrator password and I never set up an adminestrator account. I can get into the Bios, but I know you don't mess with that unless you know what your doing. The computer is an I BuyPower gaming rig about a year and a half old.
Any help would be appreciated.
Thank you, Ron

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic