What is a typical action taken before replacing internal parts of a PC?

Before replacing internal parts of a PC, the critical action to take is to disconnect the power cable. This step is essential for several safety and procedural reasons. Disconnecting the power cable ensures that there is no electrical current running through the system, which reduces the risk of electric shock while working on the hardware. Furthermore, it protects the components from potential damage that could occur from accidental short circuits during the repair or replacement process. Safety protocols in electronics maintenance emphasize the importance of powering down equipment and ensuring it is not connected to any power source when performing internal modifications.

While other actions, such as ensuring software is up to date or running diagnostics, may be valuable in the context of general maintenance and troubleshooting, they do not directly relate to the immediate safety precautions necessary when physically handling internal parts. Similarly, reconnecting peripherals would typically occur after the internal work is complete, not as a prerequisite for opening the device.