Step 1: Unplug the computer from its power source to ensure a safe working environment.
Step 2: Open the side of the cabinet and connect any loose cables with their appropriate ports.
Step 3: Locate your system unit, which can be atop your desk or lying on the floor.
Step 4 – Optional if removing only one part for repair/replacement or required if removing more than one part or undoing an attached cable BEFORE disconnecting any wires/cables involved in hardwired connections (to avoid accidentally cutting wires while forcing disconnected parts apart).