The assembly order to follow is: case, power supply, mother board, CPU, cooling kit, ram, expansion cards, drives, power, and cables.

First open the case and install the power supply.

Line up the holes on the bottom of the case with the motherboard. Install the included standoffs as needed. If the mother board came with a rear panel insert install it now. Next slide the motherboard into position. Check to see that the rear panel slots line up. Carefully screw the motherboard down, making sure not to over tighten. Follow the motherboard instructions to connect the front panel connectors, USB ports, audio jacks, et cetera.

Install the CPU. Once the CPU is in place and secured, install the cooling kit, and then carefully install the ram..

If you are adding a graphics card, install it now. Make sure it is fully seated and is secured to the case, repeat for any other expansion cards such as audio or network.

Install your hard drives and optical drives. Connect drive cables, and power to the motherboard and drives. Secure all wires and cables away from moving parts with cable ties, close the case. Plug the system in, attach a monitor, and make sure everything works, load your operating system, and enjoy.