If your computer is having a heat problem, I would suggest you take it to a pro to get it cleaned if you don't want to do it yourself. Usually what happens when laptops start to overheat is this
. But if the screen is going Blue with a whole bunch of weird text, that might be the "Blue Sceen of Death". The BSOD looks similar to this
and could be caused by the overheating or a number of other things. Hope that helps.