I have the Abit AN7 motherboard and the small fan over the chipset is making a horrible grinding noise. There arent any wires or anything in its way or anything. Is this a sign that the fan is dying? I know for a fact its the fan because I stopped it for a second with my finger and the noise went away. I would like to replace the fan with the nice blue Zalman passive cooler if need be. Am I going to have to take the motherboard completly out to do this? Please help. Thank you.