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				 i went into the bios and checked the temps, and the 2 temps it gave were (first) 28ºc and the second was around 49ºc
			
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 Th first was case temp and the second was CPU- those are normal/warm but the fan may have cooled the processor back down. Once my processor comes out from under a load, my temp drops fast.  Anything over 60 getting to the point of being hot. you're not far from it at all. 
The reason I suggested the motherboard monitor is that you can set an alarm that will go off once you hit a certain temp. Mine is set for ~160F  which is about 60C( my cpu runs about ~90F but will hit 155 or so during long gaming sessions-I need better venting myself)  That may help you eliminate that aspect of it and move to something else, such as video card or power supply voltages ( MBM also shows voltages going through the motherboard, which could possibly show if you're having voltage spikes causing the failures).