Its a heating problem. So wouldn't it be essential to open up your laptop and see if all the fans and such are running. Sounds like something hardware related is to blame. Something may have been caught in your exhaust fans and causing overheating. Which then causes the BSOD.
No doubt thats what you should do immediately before your computer dies.
And try using a different computer and only boot up your laptop when you are trying to fix it.
