Dell Inspiron 15 5000 Service Manual page 59

3 In sequential order (indicated on the heat-sink assembly), remove the screws
that secure the heat-sink assembly to the system board.
4 Lift the heat-sink assembly off the system board.
1 screws (3)
3 heat-sink assembly
5 system board
2 fan cable
4 captive screws (3)
59