Hi. My early 2011 2.2Ghz i7 15" Macbook Pro makes a louder than usual startup noise right before the chime. I'm normally used to the cranking noise in my old mini, but I wasn't expecting it in this refurbished Macbook Pro. Is it maybe the superdrive or the hard drive that's creating it? I can't really emulate it through text...it's like "da nuhnuhnuh." One of my family members got a brand new 15" Macbook Pro (Late 2011), and her's makes the sound, but it's certainly not as loud as mine. I normally expect that sound to happen on the startup of a mini or a Macbook, but it just seems somewhat loud. If it's just the superdrive, then I'm fine with that, but if it's coming from the motherboard or something, I'm going to be a little more concerned.