Without the correct credentials, the encrypted hard drive data will look like random noise. When a user starts their computer and properly authenticates with the correct credentials, BitLocker will decrypt the data and allow seamless usage of the hard drive and the data it contains. It is designed to minimize the risk of data theft or exposure from lost or stolen computers. When activated, it will encrypt the contents of the hard drives in Windows, making the data inaccessible without the correct decryption key. BitLocker Drive Encryption is a data protection feature that integrates with the Windows operating system.