This is my wonderful Macbook Pro. The noise coming from this superior device is from the fan. Apparently this is a very common problem with these computers. Just search macbook pro fan noise. Its amazing how many how to videos and questions to forums there are. I wonder if Apple would like to use this on their mac vs. PC advertising campaign. I have been using a mac for about 10 years for my job and always a PC at home. The only good thing about a mac is its case design.