hey i have laptop of acer of aspire 5542 series.i have a prob and cant understand that.when i play a heavy game on my laptop like pes football 2010 or mirrors edge etc,after playing 20 to 30 minutes my laptop turnoff automatically in just 2 sec.and the thing which from i worried which can be cause of it is that laptop start burning and becomes very hot when i play a heavy game.and if i paly simple game or just do anything light it didnt turn off.plz help me.