HP EliteBook 745 G2 Maintenance And Service Manual page 63

Remove the heat sink:
1. Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four captive Philllips screws (1)
– (4) that secure the heat sink to the system board, and then remove the heat sink (5).
NOTE:
the system board components, it may be necessary to move the heat sink from side to side to detach it.
ENWW
Due to the adhesive quality of the thermal material located between the heat sink and
Component replacement procedures 53