... com-puter work yourself or hire certified professionals, an analysis of your computer is the logical starting point.Chapter 13: A computer has many removable parts that can bereplaced or upgraded ... this chapter.Chapter 12: Before upgrading your hardware, installing new soft-ware, or troubleshooting a computer problem, you need to know cer-tain things about your PC—such as what version of ... or upgraded to provide extra speed, power, or storage.Thischapter shows why and how to upgrade your PC to make better useof it.Chapter 14: Half the fun of using a computer comes from its acces-sories...