To dream that your hard drive crashed indicates that you are being overwhelmed with information. Perhaps something is taking a emotional toll on you. Alternatively, the dream may be a metaphor that your unusually strong will and drive will set you on a crash course.
To see a hard drive in your dream represents old memories, your abilities and your experiences. A hard drive may also be analogous to your “hard driving” demeanor and attitude. If you are erasing or formatting a hard drive, then it implies that you are trying to take on a new identity. In a way, you are erasing the past and starting anew.