I bought my first ever MacBook Pro for Christmas and I love it! But, I think something is wrong with it and I don't know if I should be concerned. Every time my mac starts up, I hear a noise coming from the bottom right side of the computer. The sound is not long...maybe 2 or 3 seconds in duration. It also sounds to be mechanical. Do all macs make that noise at while starting? Is this normal? Is my mac damaged? Is this something I am going to have to get fixed ASAP?