Build Your Own Computer: Step-by-Step Illustrated Guide

1. Prepare the case: Remove the side panels of the case. 2. Install the power supply: Connect the power supply to the case and screw it down. 3. Install the motherboard: Check for pre-installed standoffs, then attach the motherboard to the case. 4. Install the CPU: Open the CPU socket, align the CPU with the socket, and close the socket lever. 5. Install the CPU cooler: Apply thermal paste if using an air cooler. 6. Install RAM: Install RAM on the motherboard. 7. Install internal drives: Install internal drives like hard drives and optical drives. 8. Connect cables: Connect all internal cables and motherboard power connections. 9. Connect external cables: Connect external cables like a monitor, keyboard, and mouse. 10. Power up: Turn on the computer and make sure it starts correctly.