Building a PC? Follow These Steps! Are you ready to assemble your own computer? Start with the motherboard, connecting cables and ensuring tabs click into place. Don't forget about power supply units (PSUs) - check for modular PSUs and detachable cables. Route cables according to your setup's specifics. Consult manuals for GPU, fan, and PSU configurations. Source: https://www.wired.com/story/how-to-build-a-pc/