I've written a few articles advising our users to back up their data. Every so often, usually when we need them the most or when the warranty has expired, our computers stop working. This wouldn't be so horribly bad if we'd backed up our files first. So, let me reiterate for anyone who has read me before that backing-up your data means that the same files are stored in two completely different places. If you've copied all your important files to an external hard drive, but then erased them from your laptop, they are not backed-up; maybe your external hard drive goes kaput, and, even though your computer is still working, all those files are lost from the external device, aren't they? To back up your files they absolutely need to be in two different places. Redundancy is the name of the game, and I'm going to teach you how to play (wow that sounded corny).