Remove the nine short screws circled in the picture.

Remove the Wi-Fi card antennas by pulling up on the connectors.

Remove the Wi-Fi card by pulling it away from its slot.

Remove the optical drive by sliding it to your right, and out.

Remove the power jack connection by pulling it back, away from the motherboard.

Remove the speaker connection the same way as the power jack connection.

Pull the motherboard towards you and to the right, slowly, and then we'll talk about the rest of it.