alright, starting on saturday, my computer starts making a wierd sound at random moments. i will be instand messaging or talkin here on TF and then my computer starts making sounds. it sounds like a freakin stick shift sound when a car accellerates. its like grrrrrrrrrrrrrrr uh GRRRRRRRRRRRRRRRRRRRRRRRR and it keeps going like that for a couple minutes and then it just stops. does anyone know whats causing this? its not a serious problem, i jus wanna know whats wrong.