Went out to buy Windows 8.1 for my new computer today and decided to get a compressed air can to do some cleaning in my current laptop, so my GPU doesn't throttle down as often (or at all).
Took like 2 hours to take the case off because laptops are stupid.
4 years of my life in my hand.
The cleaned fan, the fan blades had like 5mm of dust on them...uhh no surprise it was getting to 100C+.
3 things; the HDD, battery and optical drive take up over 50% of the space.