Follow this tutorial if you want to assemble your pc.
Ensure the clips are open, then firmly press the RAM sticks into place until you hear a click.
Attach the audio cable, usually located at the top of the motherboard.
Match the colored cables to their corresponding slots. For uncolored cables, refer to the motherboard manual.
Attach SATA cables to your hard drive and DVD drive.
Connect them to the motherboard's SATA ports.
Secure the PSU with screws.
Connect it to the motherboard using the 8-pin ATX cable.
Connect all remaining cables, including SATA power and 24-pin ATX cables.
To the appropriate components.
Seal the case securely, either by screws or clips, depending on your case design. Test your PC to ensure it works.