This extensively revised and updated 11th edition of the best-selling guide to PC upgrading and maintenance includes vital information on the latest chips and devices. Written in a friendly, easy-to-follow style, the book provides essential background and conceptual information that teaches readers how computers work. Fully illustrated step-by-step procedures then show readers everything they need to know to keep their PCs running at peak performance levels. Loaded with more than 1600 pages of hardcore information, this is the one book no professional, student, or serious home user can afford to be without. Covers memory, modems, sound boards, disk drives, printing problems, operating system upgrades, and much more.