guys.
i have a question on my y480.

tried both windows 7 and windows 8 installed.
it happened that even in the idle state the temperature on win8 is roughly 60-70 degree C.
while on win7 its ranging from 30-50 degree C.

on some severe works using autocad12, cs6 and sketchup my laptop would shut itself.
even for both OS.
any of you guys using the same model as mine?
featuring the GT640M LE.

Thanks for the suggestion bro.
I'll try doing the dust removal first and if the problem persist I shall visit the service center.

Any idea where is the service centre?
Since I bought mine 2+1 year warranty.