I configured Bitlocker on my Win 7 Ultimate machine. Bitlocker is working properly with one exception. The computer does not ask me for a PIN when I turn on the computer. Prior to setting up Bitlocker, I did NOT go into gpedit and "Enable" Require additional authentication at startup with Require Startup PIN with TPM selected. I did this step after the drive encryption was finished (when I realised no PIN was being requested). How do I get my machine to request a PIN when I start the computer?