This is a get-in, get-out Power Pack guide that focuses strictly on what PC technicians and serious hobbyists need to know to maintain, upgrade, and repair PCs. Each chapter focuses on one particular hardware feature, briefly explaining its design, operation, characteristics, features, and purpose, with information and tips on installing, upgrading, troubleshooting, diagnosing, and problem solving. This work features a highly-illustrated approach - at least one figure for every two pages. A Find-a-Fix tool takes readers through all the most common symptoms of computer problems, and helps them refine a diagnosis, and provides immediate solutions. Ron Gilster is bestselling author of A+ Certification For Dummies, Second Edition (0-7645-0812-1) with more than 250,000 copies sold in all editions. The accompanying CD-ROM provides valuable diagnostic software, searchable text of the entire book and Find-a-Fix tool.