When I enabled BitLocker on my system-drive, I wasn't asked to select an unlock-method. I didn't have to enter any new passwords/keys. I only selected a few options for the encryption, and the process completed.
I'm not very familiar with how BitLocker works.
My questions are thus. With what key has my system-drive been encrypted? Is the key in any way related to the password for my Administrator-User-Account? How is it that I did not have to enter any new keys when setting up BitLocker or when booting the system?