Wi-Fi signal very low and GPS not move at all on maps

My Problem

Low signal reception for Wi-Fi and GPS that started to not work correctly. Now they seems to works well again!

My Fix

With time, clean and neat organizzation, patience and light I figure it out in less than 2 hours.

My Advice

All suggestions to write down where every single screw belong to is more than helpful! Do it!

Use your screw-driver carefully!