I have an old Dell laptop with Windows 7 installed, recently I used BitLocker to encrypt the Windows 7 operating system partition. After encryption is done, the BitLocker keeps asking for the recovery key every time the machine boots up unless I plug in the USB key before starting the computer. I hope to find a solution to this issue through Google, but in the end I got nothing. My question is: How to Fix BitLocker Keeps Asking for the Recovery Key for Every Windows 7 Boot?
When you encrypt the Windows 7 operating system partition using the built-in BitLocker Drive Encryption feature, BitLocker will prompt you to insert a USB drive to save the startup key. After encryption completes, you must insert this USB drive every time you boot up Windows. If the USB drive is not present, Windows 7 will prompt you to enter the 48-digit BitLocker recovery key to start the computer. This is highly inconvenient for users who prefer not to carry a USB drive, as the recovery key is long and difficult to remember. In this case, users face a choice: either carry the USB startup key or forgo using BitLocker.
If you've ever used BitLocker encrypted Windows 10, you'll find that Windows 10 allows users to enter the user defined password instead of the recovery key to start Windows 10. Does BitLocker encrypted Windows 7 allow users to enter user defined passwords to start Windows? It is not possible to do this by using the BitLocker Drive Encryption program built into Windows 7, but this can be done by using Hasleo BitLocker Anywhere. We'll cover the steps in more detail below.
Step 1. Download and install Hasleo BitLocker Anywhere.
Step 2. Launch Hasleo BitLocker Anywhere, right-click the Windows drive letter (usually C:), then click "Turn On BitLocker". Please note that if the Windows 7 OS partition is already encrypted with other BitLocker software, decrypt it first.

Step 3. In this step, you are asked to choose how to unlock the Windows drive at startup. Please select "Enter a password" to start the computer.

Step 4. Now you are required to specify a password for encrypting the drive, enter the password and click "Next". You should choose a password having a combination of upper and lower case letters, numbers, spaces, and special symbols.

Step 5. After clicking "Next", you are asked how you want to backup the BitLocker recovery key. You can save the recovery key to a file or print a copy of it, then click "Next" to move on. Please note that anyone can use the recovery key to gain access to the drive, even if they do not have the password created in the previous step, so please do not disclose it to others.

Step 6. Now a pop-up will appear asking you if you want to reboot into Pre-OS to encrypt the Windows partition. Click "Yes" to continue.

Step 7. Another pop-up will appear asking you if you want to build a WinPE image to continue. Click "Yes".

Step 8. Hasleo BitLocker Anywhere starts building WinPE. This may take several minutes, so please be patient to wait.

Step 9. After the WinPE image is successfully built, Hasleo BitLocker Anywhere will prompt you to reboot your computer. Click the "Yes" button to proceed with the reboot.

Step 10. Hasleo BitLocker Anywhere will now reboot and enter the Pre-OS environment to encrypt the selected drive using BitLocker drive encryption. The encryption process may take a long time depending on the drive size, so please be patient. If you prefer not to wait, you can select the "Shut down the computer when the operation is completed" option. Simply check the box.

Step 11. After the encryption is complete, click the "Finish" button to close the window.

Step 12. Now you have to enter the BitLocker password before you can start the Windows 7.

As mentioned above, Hasleo BitLocker Anywhere can help you encrypt your Windows 7 system drive with a password and then boot Windows using that password. It is the only software that can fix the issue where BitLocker keeps asking for the recovery key on every Windows 7 boot.
A: Because Windows 7 BitLocker requires a USB startup key by default. Without the USB drive inserted, it prompts for the 48-digit recovery key each time you boot.
A: No, Windows 7 native BitLocker doesn't support password authentication. You need Hasleo BitLocker Anywhere to use a password instead.
A: Yes, with native Windows 7 BitLocker, you must carry the USB startup key or enter the recovery key. Hasleo allows password-based authentication.
A: No, re-encrypting preserves your data. Make sure to decrypt existing encryption first before re-encrypting with Hasleo.
A: It depends on your drive size. The larger the drive, the longer it takes. The process runs in Pre-OS environment.
A: Yes, the recovery key still works as a backup if you forget your password. Always keep it safely stored.
A: Yes, Hasleo works on all Windows versions including 10 and 11.
A: If you lose both password and recovery key, you will permanently lose access to your encrypted data. Keep the recovery key in a safe place.