I heard that if you wrap it in towels blocking the vents and turn it on and let it overheat. Then turn it off and let it cool for 10-15 min. Everyone that I know that has tried it it works for a few weeks. As I understand it, the board was designed for a different shaped case, and the case that was chosen doesn't optimize the airflow, so it overheats under normal use.
It is a temporary fix, but at least it may be playable while you search the couch cushions for cash to get a new one.
I personally do not own such an overpriced over-hyped chunk of child labor assembled P.O.S., so I have little room to give an opinion on the subject, but since nobody has brought it up so far, I decided to put in my $0.02.
P.s. Please forward all hate mail to "Bill Gates, 1835 73rd Ave NE, Medina, WA 98039".