For easy, I have also made an assembly guide which is just the disassembly in reverse. This presumed you followed the disassembly steps.

Place the bottom shield back over to cover the GameCube DC Power board.

Install the 4 Philips screws.

Place the GameCube back into the base.

Install the 6 Philips screws and washers onto the heat sink.

Place the metal shield over the top of the GameCube.

Connect up the white block connector from the back of the GameCube.

Install the 4 Philips screws on the controller port covers along with the copper shields.

Install the 4 Philips screws to the metal shield.

The little green board on top of the GameCube is the ribbon cable connector joining the disc drive to the GameCube.

Connect to back to the GameCube port and install the single Philips screw.

The little brown board sitting on top of the GameCube is the power board for it.

Connect the 2-pin black and red cable from the right.

Clip the board back onto the white clips to lock it into place.

Place the fan back into position making sure the 2-pin black and red wire fits between the opening.

Install the 2 Philips screws to secure the fan and cover down.

Fish the 2-pin wire through the clip holding the wire down to secure it back down.

Position the AC power board at the back of the console, making sure the 3 cream feet supports are still in place (they just rest in circle holes so can easily fall out).

Install the 5 Philips screws to hold the AC power board in place.

If you previously disconnected the 2 black wire harnesses from the Top Power Board, reconnect them now. One comes from the bottom AC Power Board and the other from the right board.

Reconnect the 3-pin black wire from the bottom AC board to the right board. Make sure to get the polarity correct. Pin 1 is marked on the right board, and the white stripe on the wire indicates pin 1.

Connect the 2-pin black and red fan wire to the right board.

Connect the 8-pin wire coming from the back of the GameCube to the right board.

Position the side walls of the rear panel inside the bottom base plastic walls.

Hook the metal angle on the bottom of the rear panel under the bottom base, not inside. This is done by tilting the real panel backwards while installing it.

Finally push it into the base fully to latch onto the bottom side clips on the base.

Make sure the Digital AV Port is folded back towards the front of the console resting on top of the GameCube.

Connect up the black and red wire to the Top Power Board and the smaller black and red DC wire.

Push the Top Power Board onto the two white clips to secure it in place.

Push the white plastic block on the bottom of the Top Power Board into the two metal tabs on the rear board to lock it into place.

Fold over the Digital AV Port and hook it onto the rear panel.

Install 7 of the 9 Philips screws from the back, leaving out the ones to the left and right of the Digital AV Port (these screw into the drive assembly once it is installed later).

Reconnect the 4-pin black wire harness from the GameCube Power Board to the right board, making sure pin 1 (white stripe) is going to pin 1 marking on the board.

Rest the console on its right side, and place the front assembly on the side with it, in the position it is about to be installed in.

Disconnect the flexible ribbon that is connected to the top PCB right below the disc drive, so it is free. Then connect the other end to the Disc Interface Connector on top of the GameCube with the blue side up. We will connect this ribbon back to the top drive PCB later.

Connect up the 3 flexible white ribbons to the 3 ports on the right board, with the blue line facing the bottom of the console.

Ensure the 7-pin black and white wire with the green connector and the white flexible ribbon coming off the right board, as well as the 5-pin ribbon from the disc drive are all still free and poking out above the disc drive.

Tip the console onto the rear panel and align the disc drive with the 2 remaining screw holes on the rear panel.

Lift up the console while holding the disc drive in place and install the remaining 2 rear screws to hold the disc drive in place at the rear.

Reconnect the flexible ribbon at the front of the console coming from the Disc Interface Connector, into the top PCB below the disc drive, with the blue plastic facing down. Make sure it is folded flat as original, so it doesn't get crushed when the front plate goes back on.

If removed previously, reattach the front metal plate to the front panel with the 4 gold Philips screws, making sure the grey foam is on the right side and visible (it protects the Disc Interface ribbon.

Also ensure the grounding wire is screwed into the bottom left screw as originally secured.

Connect the front controller port flexible ribbon to the connector in the center of the 2 GameCube controller ports, with the blue plastic facing out.

Turn the console onto its rear. Push in the metal sides of the front panel so they go inside the plastic tabs of the base, and then push the panel into place until the clips lock in.

Install the 2 Philips screws on the base holding the front panel in place.

Sit the console upright again and install the 2 black Philips screws to the left and right of the disc drive, securing the front panel to the disc drive.

Install the 4x 1/16th Hex (or a T6 bit works well) screws to the front panel facial.

Connect the ribbon, 5-pin and 7-pin wires to the top lid right side, as well as the FPC ribbon.

Re-position the top lid in the front first and then back last so it locks in the 2 front side clips, and one rear center clip holding everything in place.

Connect the two green wire harnesses on the left side to the PCBs.

Install the 2 black Philips screws in the rear.

Hook both side panels back on and install the 4 silver Philips screws to the panels, and the 2 black Philips screws to the back for each panel.