This is my problem with my fresh installation of google earth. My google earth didnt show any 3D building, while my friends could show the 3D building on their google earth. At first i thought it because my laptop doesn’t meet the display card requirement or that my version of google earth is probably older than their person. After googling for a while i find out that to show any 3D builing in Google Earth, you have to first check 3D building layer in layer menu that located in below left of screen corner.