The computer is of business class device (HP Commerical device) like HP Elitebook
User has activated DriveLock password on the storage drive (HDD or SSD)
Due to the unknown/forgotten password, the PC cannot be started or the access to data of the drive is restriced
HP Drive Lock is a proven, time-tested security feature in HP Elitebooks which provides protection against unauthorized data access. This ensures the integrity of the data. DriveLock has been designed to meet the needs of the customers who cannot afford for their sensitive data to fall into the wrong hands.
A drive protected by a DriveLock stays protected while connected to the computer and even if the drive is removed from one system and inserted into another.
Power on - unlock - usage: At power on, the system prompts the user for the DriveLock password.
If the correct password is entered, the drive will temporary be unlocked and the data can be accessed, operating system can start
If an incorrect password is entered, the information on the hard drive will remain inaccessible. The DriveLock password is stored inside the hard drive itself and cannot be read; it can only be authenticated against. Therefore, an unauthorized user cannot obtain the DriveLock password from the hard drive itself
Unless the correct password is entered, this drive cannot be used at all no matter the computer and the configuration. The only way to "fix" this is by entering the correct password.
HP or the HP Community cannot help for bypassing or removing the password. If the user cannot recall the password, the drive [HDD/SSD] will need to be replaced physically with a new one. Should you end up replacing a locked drive, you can get one online or from a local PC retail store, or from HP parts store http://partsurfer.hp.com/
Further information about HP Drive Lock can be found here: