This edition of Sams Teach Yourself Upgrading and Fixing PCs in 24 Hours has been updated to include coverage of the latest operating systems (e. g. , Windows XP and Linux), utilities, and hardware, including expanded coverage of partitioning software and DVD drives. The book has also been reorganized for ease of use by the beginner, and a detailed glossary and manufacturers reference have been added. Additional information includes: System components - what they are and how they work. Checklists of tools, utilities, and other basic repair items. CMOS settings and how they relate to your hardware. Upgrading a PC's memory. Replacing internal and/or external disk drives. Replacing or upgrading internal/external CD-ROM and DVD drives. Choosing and adding a removable storage drive. Upgrading system boards. Choosing or upgrading a sound card. Choosing or upgrading a video card. Adding/changing monitors. Modems and other communications devices. Selecting and installing a printer. Scanners, digital cameras, and digital video. Upgrading an operating system. Performance monitors, diagnostic tools, virus checkers.