Fix samsung hdd?

I have an samsung with built in hdd. One day it cold not startupp propoerly. I did a fultysearch it and if i remove the powersupply for the hdd it works fine. So i figur out if i can reformat the hdd or if i can repleace it, it will problobly work.

But how do i do it?

Is it just to repleace and the reciver will fix it self or do i have to use an special type of formating in witch fileformat will it then be?