in general, it can be said:
These harddisks encounter mechanical damages fairly often, which lead to loud cracking noises.
The sounds arise, because the read-write heads are constantly trying to find their starting position, which cannot be found any more.
Turning these harddisks off and on again and again results in total destruction of the data surfaces.
Therefore no data recovery program or utility can access the drive.
Especially for these harddisks we recommend to make use of our non-destructive examination!
Only thus your data stand a chance!