Remove connectors

Start with the large connector in the middle at the bottom of the motherboard. Here it is marked in red.

Then ease up the two connectors, one underneath the large connector just removed. These are done by raising the black tab on the connector to vertical then pulling gently on the ribbon cable. These are marked in orange in the photo.

Also lift the connector on the upper left of the keyboard, marked in orange. Just unplug it by lifting it up with your nails or with a small screw driver

Ease the antenna cables for the wifi and 3G out of their black holder, and pull the holder off the motherboard towards the top side of the laptop. This is marked in yellow.

Underneath you will find one screw, which you should remove.

Another two motherboard screws are marked in green, these should be removed.

Remove the motherboard by easing it to the right from under a tab marked in blue near the BIOS battery, and gently placing it back towards the top of the laptop.