Nec Ad7170a

Right I’ve read all other posts but i’m confused.

My drive won’t read nething and i mean anything music dvds cd’s etc etc.

I rang NEC and thye said its gonna be a drive problem and not firmware etc but reading all ur posts it seems it is firmware, so how can i get it working, i know enought about PC’s to get by but flashing is out of my level, do i just buy a new drive or what?