Windows 10: I was asked to put these letters and numbers in A1B2C3, I did and my computer shut off and...

I was asked to put these letters and numbers in A1B2C3, I did and my computer shut off and will not power up now.

:)

 

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?

 

NumLock Turns Letters Into Numbers on Desktop Computer

I had the same problem, it seems that it happens only with several keyboards.
Finally I solved it this way (sorry, but I've got Polish language set):

• Step 1 - Go to keyboard driver properties using Device Manager and select Update driver
  
• Step 2 - Select Browse my computer, then Allow me to choose from drivers list
  
• Step 3 - Uncheck "Show compatible hardware"
  

Now find something like "Standard keyboard device" on the drivers list, install it (click Yes in the compatibility warning window) and check if keyboard is still working.

If so - reboot Your computer and enjoy fixed keyboard without letters turning into numbers.

If not - revert driver back and try another one.

 

Computer keyboard letters not working.

My computer monitor and GEFORCE RTX driver was unplugged without properly shutting down. With a solid blue screen with white letters, the computer is in "BitLocker recovery" mode when I attempt to start it. It's asking me "enter the recovery key for this drive". My keyboard letters do not work, only the numbers do. Any suggestions?