Final answer:
The computer assembly steps should be arranged in the following order: Open the case, connect all internal cables, attach the components to the motherboard and install the motherboard, install internal drives, install adapter cards, install the power supply, install drives in external bays, re-attach the side panels and connect external cables to the computer, and boot the computer for the first time.
Step-by-step explanation:
- Open the case
- Connect all internal cables
- Attach the components to the motherboard and install the motherboard
- Install internal drives
- Install adapter cards
- Install the power supply
- Install drives in external bays
- Re-attach the side panels and connect external cables to the computer
- Boot the computer for the first time