Your getting these problems with a near £2000 laptop??, that's dreadful.
I think you many need to look into getting a completely different laptop or a desktop if you have received a faulty laptop two times.
This is my computer, I put together in October:
http/uk.pcpartpicker.com/p/ZJffYJ
As you can see by the price is it only nearly a £700 so its a lot cheaper then your branded laptop. The CPU and GPU take up most of that price really, they are what makes the pc so powerful thou.
My CPU is just about as powerful and capable as your faulty laptops i7 CPU and I also have a full desktop 970 GPU compared to your 970M. I even have a bigger SSD size than yours.
Do you see what I'm saying here..
That laptop is way over priced and you shouldn't of really got it anyways as you could of saved a £1000 there about and just put together your own system. Trust me, putting a computer together these days is super easy now. Everything just clicks in then you plug the power cables from the PSU in and off you go.