Q: Preferably free cause I dont have much money lying around. It is at 81 celcius right now.. doing nothing. after being left of for a day.
A: Without spending money the best option is to underclock. Although your computer will be slightly slower its free to do and you cool the CPU down. When you boot up hold down the del key or f10. Sometimes its f2. Once held down for a little while you should be at a screen where one line will say something like frequency or bus speed. Select it and drop the number of MHz your bus runs at for example. THis will put less strain on the CPU thereby lowering heat.