Hey guys, my CPU fan makes this horrid buzzing/whirring noise when I first start it up. This time I was monitoring everything, and saw that the rpm was sitting in the low 1000's. Eventually it went back to being quiet and I saw that it had increased its rpm to the 2000's range. Should I get a new fan? Or should I mess around with the power setting on the MoB? Or is this completely normal and nothing to worry about (though it is extremely annoying)?