I stand corrected. After reading a bit more (which I should have done in the first place)
If your computer has as a Trusted Platform Module (TPM) 1.2 chip, BitLocker can use the chip to perform a system integrity check—a process that verifies your computer system has not been tampered with—before unlocking your drive. If you do not have a TPM 1.2 chip, you can still use the encryption provided by BitLocker, but not the system integrity checking. For information about how to enable BitLocker on your computer without using a TPM 1.2 chip, see the BitLocker Drive Encryption Step-by-Step Guide (http://go.microsoft.com/fwlink/?LinkId=79031). Where Can I Get More Information? For more information about BitLocker, including requirements and options, see the BitLocker information page on TechNet (http://go.microsoft.com/fwlink/?LinkId=67438).