I hate to admit it, but computers occasionally break. Have no fear: you can typically fix the computer yourself! The “Repairs” chapter explains how. To avoid repairs, do what’s in the “Maintenance” chapter. Even if your computer needs a repair, you can typically get the computer to fix itself if you do what’s in the “Maintenance” chapter.

If your computer acts so strangely that normal repair procedures don’t fix it, the cause might be that a nasty person purposely screwed up your computer, by planting a virus inside the computer. The “Virus” chapter explains how viruses work and how to combat them.

Warning: after you read this stuff, you’ll become smart enough so that your neighbors will ask you to fix their computers too!