Like the vast majority of computers, Apples are cooled by fans. MacBooks, MacBook Pros and Apple desktops all rely on fans to ensure that the computer doesn’t overheat and burn out the motherboard, speakers and other assorted electronics inside your case. Because of this, it is imperative to know whether your fan is functioning correctly or is broken and inoperative. Close observation can tell you whether it’s working. Writer Bio

How to Tell Whether Your Mac Fan Is Broken - 72