HP Pavilion G4 Maintenance And Service Manual page 73

6. Remove the system board (3) by sliding it up and to the right at an angle.
NOTE: System boards for use with computer models equipped with an AMD processor have
the Southbridge chip located on the bottom of the board. A thermal pad is used on
the Southbridge chip (1) and the base enclosure heat sink (2) that services it. The
thermal material must be thoroughly cleaned from the surfaces of the system board and the heat
sink attached to the base enclosure each time the system board is removed. Replacement
thermal material is included with all base enclosure and system board spare part kits.
Reverse this procedure to install the system board.
Component replacement procedures 65