yup the HDD is bad. Sometimes if you flip it around, itll get going temporarily. 

I just picked up an SE and its doing the same thing. Had to rotate the drive around so i can get the data off of it. 

It basically cannot find sector 0, so it keeps hunting and generates constant seek errors. 

I believe the platter begins to lose its magnetism over the years. Since it is a stepper drive, a good low-level format can cure it as long as the heads are not damaged.