Been having the same problem since beta, computer will out of nowhere hard reset. I know it isn’t the power supply (just got that replaced), and like everyone else here I am able to run every other game out there on the market @ the highest settings. I am using an Asus G73s notebook; interestingly enough, it seems that many other users of the G73 series are experiencing the same problems.
Yes, as many pompous middle-aged IT pros out there are so keen to point out, it may be a problem with the hardware. I am willing to bet it isn’t though, based on my own trouble shooting, and the sheer volume of other unsatisfied customers of this game.
If Anet doesn’t get their act together soon I’m seriously considering demanding a refund.