On the next prompt, make a note of the key ID (e.g., “BED9A0F3“) to help ID the recovery key for this drive. Now go to where you backed up the BitLocker recovery key for this drive.

However, if your Windows OS is corrupted and you cannot boot into Windows, you must use the Command Prompt. Press the Shift + F10 keys on the Windows installation screen to launch the Command Prompt.

But if you lost your recovery key, you might be greeted with a "Couldn't Reset Password" prompt, meaning you can't reset your password without the correct key. Don't panic just yet.