first what you need to to do is take all the plastics of the bottom of the device which will reveal the screws.

loosen all the screws with the hillips 00 Screwdriver and then take screws out.

After taking all the screws off the will loosen. So then what you do there you pull it up then forward or away depending were your standing.

Once you've open the device you'll see 4 copper screws. Unscrew the front screws to unlock the bottom case of the device.

next loosen the screws with

now unscrew the 2 copper screws to be able to make the bottom case will come out reveling a copper screw

now flip the device to reveal the bottom. Now as soon as you flip you'll see 4 more copper screws, then your going to need to unscrew them unlocking the motherboard.

slowly pluck out the motherboard without braking no ribbons form the device. And that's how you take the motherboard out.