Hi,
Gone thru with ur query.
Try this if u can shell out some money & if u really have some important data on the harddisk & if u want that particular HDD on ur system.
Get ur drive checked by a service centre, for physical drive integrety(check of ckt of HDD electronics ) & magnetization data pole check(check of head to produce exact magnetization poles for storing ones & zeros). This is done if any physical damage is done on platter of the disk or if by any chance head comes in contact of the platter directly(usually head comes in contact by pole magnetizing element which is the tip of metallic head).
This is done most of Seagates centres but i am not sure what commercial name they have for this test. So cantact ur SAMSUNG centre for this.
This is a quite costly process & i would suggest that if drive & data is not important go for a new one b'coz two such drives can come for the price of the test & recovery. The recovered data will be given on a CD/DVD.
Think & invest
Bye