haha ..... simply enter the bios of ur comp, raise the shutdowntemperature, save the new settings ...... thats how i fixed that when we had that incredibly hot summer =)
not because it shut down, but that allertsound was anoing while playing ...
the one that it is on computer doesnt handle it... and I have one aimed to the computer (and another to me xD) but it still shut down when I play any game xD