I've never seen such a setting disabled or enabled. I always saw settings for the boot sequence where you can define which device (optical, USB, hard disk, network) must be tried first, second, etc.
So what setting exactly are you talking about and what are the settings for your boot sequence?
It might be easier to talk to Samsung customer service by phone. That's more interactive then this.
my question is why does my laptop not boot from a disk as I cant change the setting form disable to enable I think this is very poor and I wont be buying a Samsung again anyone any idea what I can do about this