I just bought my first mac product about a week ago. I bought an iMac 27" i3. I have been hearing a faint tick noise every 10 seconds or so when I am using my mac. It doesnt happen all the time but when it does I notice a faint tick noise which seems to come from the top right of my screen. Everything seems to be working fine with the computer but I'm wondering if this faint tick noise I hear every 10 seconds or so is normal or if i should be worried about it? Like I said sometimes I dont hear it happening at all, just once in a while i'll notice it when using the computer. I'm not super computer savy so just wondering if anyone thinks this may be something to worry about or am i over reacting? Thanks for the help!!