Hello, thank you for reaching out to Microsoft Q&A.
Does the BitLocker recovery key ID on your PC match the recovery key ID displayed online for your Microsoft account?
If the key you have is correct, you can press the Esc key on your keyboard or select the "Skip this drive" option at the bottom of the screen to start your computer from the recovery environment screen.
Select Advanced Options > Open Command Prompt.
To check the status of the BitLocker type manage-bde -status
To unlock:
Execute the following command to unlock your hard drive.
manage-bde -unlock C: -RecoveryPassword YOUR-48-DIGIT-KEY
Replace C with the drive letter of the locked drive.
Also, replace YOUR-48-DIGIT-KEY with the actual BitLocker recovery key stored in your Microsoft account.
If the hard drive is unlocked, you can disable BitLocker encryption by executing the following command:
YAML
manage-bde -protectors -disable C:
Replace C: with the drive letter you locked.
The drive will start decrypting and check if you can sign in.
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If this doesn’t work and your old laptop is still functional, insert the SSD into that laptop, follow the same steps to turn off BitLocker encryption for the drive, and then connect it to the new PC.