HP Pavilion 17-AR050WM Maintenance And Service Manual page 49

NOTE: The thermal material must be thoroughly cleaned from the surfaces of the heat sink and the system
board components each time the heat sink is removed. Replacement thermal material is included with
the heat sink and system board spare part kits.
Thermal paste is used on the processor (1) and the heat sink section (2) that services it. Thermal paste is also
used on the VGA component (3) and the heat sink section (4) that services it.
Reverse this procedure to install the heat sink.
Component replacement procedures 41