Windows 10: Windows won't accept correct password

Hello,I'm trying to convert the system drive from MBR to GPT, whatever that means, so I can enable Secure boot, so I can install Windows 11. So I found this option called mbr2gpt for which I need to troubleshootrestart my PC, then select command prompt and then... Then I need to enter password. My Microsoft account is shown, with my email adress, so it's not a local account, and I can log in to it on websites such as this one, but when I type the password in the login screen it says it's incorrect. I tried changing my user password with command prompt net user username new password and I'm g

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After Windows 10 update, signin screen won`t accept my pssword.

Sign-in screen won`t take my password after Windows 10 update on a new HP laptop. I had setup a pin login but now asks for Microsoft password which I wrote down and have used before but will not accept now.

Doug991

 

BitLocker won't accept correct disk password after... something

The company I work for has computers with TPM chips and Windows 10 Enterprise, and uses BitLocker for full-disk encryption. They have BitLocker configured to require a password at boot (which I believe means the TPM is not involved in the decryption, and the disk should only be encrypted by the password itself; is this wrong?).

A coworker has his computer off the network for a while and they removed his computer's access. To get access back, IT had to do "stuff" to it.

In the process of this, they had to

• Make BIOS accept USB boot drive
  
• Do something, maybe including updates to stuff (they weren't able to explain what the thing they ran did, only that it "did stuff")
  
• Boot the computer
  
• Noticed BitLocker password wasn't working
  
• Went back into BIOS and re-initialized the TPM (because "sometimes that makes it accept the recovery key")
  

But the BitLocker password still didn't work... and the extraordinarily-competent IT people (the same ones who re-initialized the TPM) also lost the recovery key from their database.

What is actually causing it to reject the correct password?

Is the TPM relevant to this at all? (does password-protection require both the password to be correct AND the TPM to have the correct PCR state, or is it independent of the TPM?)

How can he unlock the drive with the password? (if the above question is that it still requires the TPM, then this is probably a worthless question because it's impossible)

 

Safe Mode won't accept correct password

I'm trying to run a third party software (AVG Internet Security) cleanup file that recommends Safe Mode. Yet, when I get to the Safe Mode lock screen, it won't accept my password (note that I am entering the password, not the PIN - it's the same password that gets me into my Microsoft account). Any suggestions what I should try? I'm hesitant to run the cleanup file in full Windows since it's not recommended.