AW Area 51 - change motherboard

hi.

i own an AW Area 51.

sorry if i post in the wrong place. This is my first post in here.

i am planning to change my motherboard. the problem is I don't know where to start because there are other circuit board ( one at upper side and other one at the bottom).

i afraid that changing the motherboard will affect my system.

can anyone give me some guide about my problem here.