In addition - it is my considered opinion that EVERYONE should use disk imaging software on a regular basis. If you create an image of your drive (or at least your system partition) you will be able to recover from almost any computer crisis with little or no pain & suffering. The image(s) can be saved to off-disk media or a second hard drive (the latter being the easiest and most convenient). I create 2 or 3 images a week, keeping the two most recent. In addition to the best of breed Acronis True Image, which is not free, there are a number of excellent free Disk Imaging Software options. In my opinion there is no reason or excuse for everyone not to use one.