try this

remove cd-rom drive....remove floppy drive nd all peripherals

check the jumper settings on HDD .((shud be primary master))

check the bootup sequence in BIOS...

is ur HDD being detected in BIOS???
If all fails......then replace it!!
:roll: low level format??...dat will DESTROY everything rather than giving u a bakup of ur data....
try speaking to the samsung dealer that u want to have a backup of data first...
:roll: :roll: samsung nd me never go together!!!