Hello,
According to this warning message, you should be cautious about using this method to reset the password directly, which can cause encrypted data to be deleted after the password is reset.
May I know if you know the correct administrator account password now?
If you know your password, it is safe to change it after logging in. To do this, press Ctrl+Alt+Del and click "Change Password".
If a password is lost but a password reset disk is available, use the disk to reset the password.
I hope this helps. Please let me know if you require further assistance or have any questions.
Best regards