If you’ve signed in with a Microsoft account, your disk is likely already encrypted, and the key is likely already stored on ...
How to keep your PC encryption key safe - from Microsoft and the FBI ...
Forbes reports that Microsoft complied with an FBI request for decryption keys to a suspect's personal laptops last year.
To fix the “Cannot install Windows, BitLocker Drive Encryption is enabled on selected partition” error, suspend BitLocker via Settings or Control Panel, or use your recovery key to unlock the drive.