Benq P52 motherboard removal

I have to mention the power connector at P52, but I have a problem with the distribution of and removing the motherboard.

I try to spread the cover, but if something more kept under the keyboard, more or less at the height of the letters "O"
Screw under seal, of course, turned on / laptop after the warranty /
1.took out matrix together with the flap.
2.took out cooling system and wiatark
3.turned on all screws from the bottom of the laptop
4.took out Hdd and battery
5.took out card wi-fi
Wordy is more or less, so that the casing on each side, you can deflect, but in no way forgiven in the middle part.
Please help

 

For all removal Benq P52.
1.Please unscrew all the screws from the bottom of the laptop, the sticker warranty too/if the laptop after the warranty/
2.For convenience unhook cables wi-fi antennas, cables and remove the image sensor arrays.
3 And now the most important 2 screws that hold the keyboard is hidden under !!!!. We must therefore remove the keyboard, detach the flat ribbon cables and unscrew these 2 screws. Unbuckle next 2 flat cables can be safely
Remove the chassis and we already have free access to the motherboard.