When computers lose power Available to Purchase

You have just entered two pages of carefully‐composed material into your word processor when the lights in your office dim and the computer screen goes dark. A few minutes later, the lights come back on again and you restart your computer. As it grinds through its start‐up procedures you wonder whether it will behave normally or leave you with a serious repair problem. This time you are lucky and your normal applications are available. However, when you open your word processor and look at the file you were entering, you find that your last two pages are missing.