Packed with crisp black-and-white photographs and illustrations, this bestselling guide walks people step by step through all aspects of troubleshooting, upgrading, and repairing a PC Includes an all-new chapter on "Working Outside the Box," which focuses on external communication devices and controllers Covers hardware upgrades and repair-memory, hard drives, CD and DVD drives, video cards, monitors, USB connections, modems, routers, and more-as well as tools for diagnosing and fixing software problems, including antivirus software, diagnostic programs, and system restore and driver update utilities The CD-ROM includes essential video clips of the most common Fix-Your-Own techniques and hard-to-find information on older machines as well as a searchable PDF version of the book, making the book valuable to owners of both old and new machines