Introducing hardware -- Introducing operating systems -- PC repair fundamentals -- Form factors and power supplies -- Processors and chipsets -- Motherboards -- Upgrading memory -- Hard drives -- Installing and supporting I/O devices -- Multimedia devices and mass storage -- Installing windows 2000/XP -- Maintaining Windows 2000/XP -- Supporting windows 2000/XP users and their data -- Troubleshooting windows 2000/XP startup -- Windows 9x/Me commands and startup disk -- Supporting windows 9x/Me -- PCs on a network -- PCs on the internet -- Securing your PC and LAN -- Notebooks, tablet PCs, and PDAs -- Supporting printers and scanners -- The professional PC technician -- How an OS uses system resources -- Electricity and multimeters -- Supporting SCSI and legacy devices -- Disassembling a notebook -- Introducing linux -- Introducing the Mac OS -- Supporting windows NT workstation -- CompTIA A+ acronyms.