BitLocker encryption has no effect on the performance or boot time of your computer. It is a full-volume encryption feature included with Microsoft Windows versions beginning with Windows Vista that never slows down or interferes with your computer's boot process.
BitLocker encryption is designed to protect data by providing encryption for entire volumes. By default, it uses the AES encryption algorithm in cipher block chaining (CBC) or XTS mode with a 128-bit or 256-bit key. Unlike simple password protection, BitLocker encryption converts your files and data into cipher text.
Without the BitLocker password or recovery key, it is impossible to decode the encryption in the same way that hackers do in password cracking.
BitLocker encryption includes three modes: transparent operation mode, user authentication mode, and USB key mode. You should bear in mind that BitLocker encryption is only available on supported devices running Windows 10 or 11 Pro, Enterprise, or Education. You are allowed to enable BitLocker by right clicking your C drive and there should be a Turn On Bitlocker option.
If you have the Home edition installed on your computer, you can use Veracrypt as an alternative toolset. It is both free and open source, as well as reliable. When you enable Veracrypt on your PC, you must enter a password before Windows will launch. Bitlocker boot is completely normal and has no discernible impact on performance.
The password or 48 character recovery key is important whether you are using BitLocker encryption or Veracrypt encryption on your computer. You can only access your files or drives using one of them. When you've lost them both, knowing how to unlock BitLocker drive without password & recovery key is a must.