A method of fabricating a printed circuit board is disclosed. The method includes opening a first window in a first base board and opening a second window in a second base board and a resin layer. The resin layer is between the second base board and the first base board. The method further includes bonding the first base board and the second base board through the resin layer; placing a heat dissipating conductor in the first window in the first base board through the second window; placing a resin portion on the first base board in the second window; embedding a sub-board in the second window of the second base board; and bonding the sub-board with the first base board through the resin portion.