about 5 minutes ago i realized that when i put my computer back together i put my tower fan on backwasrds. this means that the fan was sucking air into the tower. anyway i was like wtf. so i was too lazy to turn off the power of my comp. lol. so i took a screw driver and took the side off and then preceded to take the fan off. that s when my hand slipped. slipped right in to the spinning fan i was removing. it instantaneously broke of one of the fan blades lol. now the stupid thing is off balanced cuz it is missing a blade and vibrates like a mother f***er. well the moral of the story is dont repair your computer while it is turned on... the cost of the moral $25(the price of a new fan)...