Right I've received my replacement. This time it works, well sort of! I've been suffering a LOT of crashes using Football Manager 16. Apparently my unit is overheating, but I can't be sure.
I'm running speedfan here, and I've told it to control the fans. Whilst I have been typing this the temps have reduced quite nicely. GPU is just 44 and HD is 40. The cpu varies massively though, and although it is 43-45 at the mo, I've seen it as high at 70.
But in FM they ramp up skyward. I've had some real nasty crashes which cause the machine to reboot. I've had a corrupted game file as a result. This is not really what I expected, but I can't be sure what is causing this. What's the operational temps for these machines?