You can use BitLocker Drive Encryption to help protect your files on an entire drive. BitLocker can help block hackers from accessing the system files they rely on to discover your password, or from accessing your drive by physically removing it from your PC and installing it in a different one. You can still sign in to Windows and use your files as you normally would.
BitLocker can encrypt the drive Windows is installed on (the operating system drive) as well as fixed data drives (such as internal hard drives). You can also use BitLocker To Go to help protect all files stored on a removable data drive (such as an external hard drive or USB flash drive).
After a drive has been encrypted and protected with BitLocker, administrators can either right click on the drive in explorer and click/tap on Manage BitLocker OR use the Manage BitLocker page in the BitLocker Drive Encryption item in Control Panel to turn off BitLocker for the drive, suspend or resume BitLocker protection for the drive, change the password to unlock the drive, remove the password from the drive, add a smart card to unlock the drive, back up the recovery key, automatically unlock the drive, and reset the PIN.
This tutorial will show you how to add or remove the Manage BitLocker context menu from all unlocked drives encrypted by BitLocker for all users in Windows 7, Windows 8, and Windows 10.