|If it is under warranty, take it back or contact factory support for warranty service instructions. If not, and it is a laptop, contact Sony support to see if they will sell you a replacement if you think you are up to installing it. If it is a desktop, just open the case and measure the width of the fan in millimeters, check how many pins on the plug and purchase a new one (local store, Tigerdirect, newegg, etc) these are not expensive nor difficult to swap out.|
You have to be a little bit crazy to keep you from going insane.
If all else fails, read instructions.