Hitachi hard disk head and disk stuck recovery case

Case:
Customers took a 320GB laptop hard disk recovery data, saying that after accidentally colliding with the laptop, the blue screen was crashing, and then the system could not be turned on.

Solution:
After taking the hard disk, there is an abnormal noise after power -on, cannot be turned, and there are slight and regular abnormal noise. It is suspected that the magnetic head and stuck are killed.As a result of the death of the disc card, the hard disk cannot be transferred. After the adjustment and repair, the failure is eliminated, and the final data recovery is successful.