Hi PCPiranha thanks for the reply
The HDD is definitely faulty as it keeps clicking then powering down and it does exactly the same when it was removed and connected to a external USB HDD enclosure.
If i put a brand new HDD in the HS-DH320GL that has never been formatted is there anything i need to do ?
I realize that this is on my own head if it goes wrong as it is out of warranty anyway.
Thanks