Covering the most common and challenging tasks PC technicians must face, this book offers readers step-by-step guidance on how to get the job done in the real world. In addition to covering the CompTIA objectives, the book demonstrates installing or replacing a power supply or laptop hard drive, upgrading Windows 2000 to Windows XP, scanning for and removing viruses, installing printer drivers, and troubleshooting a network. It breaks down the various aspects of a PC technician's role and provides hands-on experience for hardware and software installation and maintenance, including how to install and upgrade operating systems, networks, and security systems.