Ensure that all screws holding down the motherboard are removed.

The circles show where my last few screws were located, before removing the motherboard.

Depending on which version of the laptop you have, there may be a screw toward the top left holding the fan to the case that needs to be removed also.

Lift the motherboard up gently at the notch on the right, identified by the green box.

Once it is lifted up, pull gently to the right and lift up to dislodge it.