Toshiba Satellite S55T-B5335 Motherboard Replacement

Remove the two 7 mm Phillips #1 screws that hold the battery in place.

Pull the battery from laptop.

Remove the ten 7 mm Phillips #1 screws that secure the back cover.

Wedge the tip of a plastic opening tool between the back cover and the metal frame.

Twist the plastic opening tool, while wedged, in order to release the retaining tabs from the frame.

Repeat these steps in a circular pattern around the laptop to release all retaining tabs.

Once all retaining tabs are released from the frame, you can pull up on the back cover to remove it.

Remove the two 3.5 mm Phillips #1 screws that hold the cooling fan in place.

Wedge the flat end of the spudger between the connector and its socket.

Twist back and forth in order to pry the connector loose from its socket.

Lift up on the cooling fan to remove it from the laptop.

Remove the three 4 mm Phillips #1 screws holding the motherboard in place.

Remove the four 4 mm Phillips #1 screws mounting the heat sink to the motherboard.

Gently lift on either side of the heat sink to separate it from the laptop.

On all ZIF (Zero Insertion Force) connectors, use a spudger to lift the lock.

Use tweezers to pull on the designated pull tab to remove each ZIF connector.

On all No-Fuss Ribbon Cable Connectors use tweezers, on the designated tabs, to remove them.

Lift on the motherboard from the USB port area while pulling the frame away from motherboard.

Once all connectors are separated from the motherboard and the USB port area is freed, carefully lift on either side of the motherboard to remove it.