I've had an MSI gaming laptop for about 8 months now, has worked great. While playing a game yesterday, it instantly shut off. Did it a couple a more times. I monitored temps and logged them using GPU-Z. Highest I've seen is 90 C. But it's shut off anywhere between 65 C - 90 C. Last one was running steady at 71 C. Vents are clean. I don't "think" its an overheating problem, but I could be wrong. Any ideas? Is my Nvidia GTX 580m beginning to bite the dust?