BitLocker is a full disk encryption software that comes standard with PCs running Windows 8 Pro or higher.
This document provides instructions for encrypting the hard drive without Trusted Platform Module (TPM – integrated security chip) present or enabled, and bypasses the USB flash drive encryption key requirement.
- From the Metro UI or the search box, type GPEDIT.MSC and press enter
- Open Computer Configuration =>
Administrative Templates =>
Windows Components =>
BitLocker Drive Encryption =>
Operating System Drives. From the right pane double-click “Require additional authentication at startup”
Now you can enable Bitlocker without TPM