To start off you must first determine whether or not your hard drive is really crashed or not. If you can not boot to your Apple computer is the first stop for the diagnosis should discussions.apple.com. Does the gray screen, the error message or see strange flicker? Regardless of the specific symptoms you are experiencing, the first place to check out the Apple discussion page to see whether other users have experienced similar problems. Often there are posts from other Apple owners who can detail a simple decision based on what is happening. Tips: Be sure to select the appropriate categories (Apple desktop, PowerBook, etc.) and its model, so you're sure to get accurate search results. Also, try several different variations of the keyword in the search, because people often describe things...