This document discusses preventive maintenance and basic troubleshooting for computers. It outlines the purposes of preventive maintenance as reducing hardware and software problems, protecting the computer and data, and extending the life of components. Specific preventive maintenance tasks described include cleaning dust from fans and components, securing cables, updating software/drivers, and scanning for viruses. The benefits of preventive maintenance are listed as increased data protection, equipment stability, and reduced repair costs. The troubleshooting process overview outlines verifying obvious issues like loose cables first before trying quick solutions such as restarting or cycling power.