A power cable is required for the PC to work.

A display cable, such as a VGA is required to use a display, such as a monitor.

An Ethernet cable is required to connect the PC to the Internet.

Devices must be connected to the PC in order to be used, mainly through USB or wireless connections.

This shows that the PC is working.

The GPU drivers are up to date.

The Internet is working.

Steam has been installed, as well as a game.

The graphics options have been modified.

The audio options have been modified.

The controls have been modified.

The game is running.

I have accessed the in game FPS counter.