P775DM3 Motherboard replacement

Unlock the lock circled in red.

Lift the battery while unlocking the lock circled in red.

Unscrew the two screws circled in red.

Slide the plate in the direction of the arrow.

Lift the plate

Unscrew the screw circled in red.

Lift the disk with the green tab.

Remove the disk in the direction of the arrow.

Unscrew the screw circled in red.

Pull the SSD in the direction of the red arrow.

Unscrew the five screws circled in red.

Slide the plate in the direction of the red arrow.

Lift the plate.

Unscrew the two screws circled in red

Press a paper clip in the three places marked in red

Lift the keyboard and feel free to put some strength

Disconnect the three framed connectors in red

Pull the white drawer in the direction of the arrow to unlock the connector

Disconnect the red circled connector

Pull the black drawer in the direction of the arrow to unlock the connector

Disconnect the red circled connector

Lift the flap that holds the connector circled in red

Disconnect the red circled connector

Remove the keyboard

Spread the two clips in red.

Remove the RAM card.

Disconnect the connector circled in red.

Remove the battery.

Unscrew the screw circled in red.

Disconnect the two connectors circled in green.

Remove the WLAN card.

Unscrew the four large screws circled in green

Unscrew the five small screws circled in red

Lift the cooler with the two tabs circled in blue

Pull the lever circled in red in the direction of the red arrow while pressing on it.

Unscrew the two screws circled in red

Lift the card to allow access to the red circled connector

Disconnect the red circled connector

Pull it in the direction of the red arrow

Unscrew the three screws circled in red.

Disconnect the framed connector in red.

Remove the fan.

Unscrew the three screws circled in red.

Disconnect the framed connector in red.

Lift the fan.

Lift the flap that holds the two connectors framed in red.

Disconnect the two framed connectors in red.

Lift the flap that holds the two connectors framed in red.

Disconnect the two framed connectors in red.

Disconnect the box connector in green.

Unscrew the twenty screws circled in red.

Unclip the edge of the case at the two places framed in green.

Unclip the edge of the case at the two places framed in green.

Remove the top of the case.

Unscrew the five screws circled in red.

Remove the framed card in blue.

Remove the framed card in orange.

Disconnect the two framed connectors in green.

Disconnect the red circled connector.

Unscrew the screw circled in red.

Remove the motherboard.