My colleague's Lenovo T440s cannot power on/up yesterday, so I opened up the laptop and unplug the socket of the internal battery. I put everything back to normal and power on, and it powered on, so great I thought I have solved the problem.
when my colleague promte to enter the PIN in BitLocker (the blue screen), the BitLocker said it was incorrect even though the PIN is correct. So I need to go through the recovery key mode, I thought I have saved the right recovery key file, but turns out the identifer in the file is different from the laptop. so technically I do not have the recovery key.
my question is the TPM in the lockout mode? When will the laptop's TPM be unlocked and it will accept the PIN again?
If the TPM is not in the lockout mode, is there any ways to force the BitLocker to accept PIN instead of recovery key