BIOS update messed up PIN. I can't login!!!

[Geoky10]

I turned on my HP laptop today. HP Support app on my taskbar showed an update was available. (Windows 11 H) I launched the app and downloaded and installed the BIOS update. (I followed the instructions on screen.) The laptop updated the bios and login screen appeared. I use a 6 digit PIN to login. Thiis is the message on screen:

Something happened. Your PIN isn't available.Click to setup your PIN again.

Setup pin

Sign-in options

Setup pin option is unresponsive when I click it.

Sign-in option gives me 2 options (icons) when I click it. A key (PW) icon and numbers(or dots?) icon. Only the first one is responsive and wants me to enter password. I enter the password (the one I used for initial setup, my msn email password).it says incorrect. After several attempts, laptop gives me an option to change password. I am required to insert a thumb drive with password recovery. I never considered creating it!!! So ,there is nothing to read when I attach one. I never heard of such recovery method.

Basically, the blue screen is on. I rebooted several times. No change. BIOS update erased the PIN or can not find it.

What do I do?

Thanks.

[Geoky10]

I looked at similiar BIOS related threads here. They were all locked by the administrator. I guess they won't allow security related questions. Any thief can claim he is the owner, I reckon.

I called HP's support number. A heavily accented lady (India?) told me I needed to pay. Warranty was over. it cost me $50. Another support rep she transferred  helped me. 

Due to obvious reason, I shouldn't write how it worked out. Now, pc is running.

Lesson to learn:

When or if HP Support assistant shows there is a BIOS update, DON'T!! (Even the guy on the phone said 'ignore it. It is always a trouble'.)