Windows 10: If I entered my pin incorrectly multiple times, how do I get back into my account?

My keyboard was glitching, which caused me to enter my pin wrong multiple times. I proceeded to fix my keyboard and then went back and entered my pin correctly. After entering my pin correctly, my PC said "preparing your Microsoft" and then the next screen my home screen, an error message popped up that said something was wrong and I needed to sign out of my account now and if I didn't it could cause me to loose stuff and gave me the option to press sign out. I pressed sign out and it brought me back to the screen to enter my pin. So I did and the next screen said "preparing your Microsoft"

:)

 

Required to type 'A1B2C3' before entering PIN

As of a week ago, I have been receiving the error message, "You've entered an incorrect PIN serveral times. To try again enter A1B2C3 below." The problem with that is that I have never entered my PIN incorrectly and am the only one that utilizes my desktop. I have ran malware/virus scans and have turned up zero discrepancies. Additionally, I reinstalled Windows 10 (and activated) a month ago after upgrading my motherboard, processor, and memory. So why is it asking me to enter in this letter/number combination EVERY time despite never having entered in my PIN incorrectly? This is rather annoying and essentially a two-step authentication factor, of sorts, that I did not ask for. Is anyone else experiencing this?

 

Entered an Incorrect PIN too Many Times

I will try waiting several days as you did. When steps are suggested they aren't understanding that there are no choice...the screen just says you have entered the wrong pin too many times....that's all. Then restart your computer. No other choices are
on the screen.

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code: