You receive an error that BitLocker will not work if no compatible TPM hardware is present.
Use an USB stick (that always have to be inserted before booting your machine).
- Open group policy editor: Start » gpedit.msc
- Navigate to:
- Computer Configuration
- » Administrative Templates
- » Windows Components
- » BitLocker Drive Encryption
- » Operating System Drives
- Double-click Require Additional Authentication at Startup.
- Click Enable.