HP Pavilion DM4t-1100 Maintenance And Service Manual page 92

NOTE:
Steps 1 through 4 apply to computers with discrete subsystem memory on the system board.
Steps 5 through 7 apply to computers with UMA subsystem memory.
1.
Turn the system board upside down.
2. Disconnect the fan cable from the system board.
3. Follow the sequence embossed on heat sink to loosen the six Phillips PM2.5×7.0 captive screws
(1) that secure the fan/heat sink assembly to the system board.
NOTE:
assembly and system board components, it may be necessary to move the fan/heat sink assembly
from side to side to detach the assembly.
82 Chapter 4 Removal and replacement procedures
Due to the adhesive quality of the thermal material located between the fan/heat sink