Acer Altos G710 User Manual page 67

Press down the retainer lever to lock the CPU in place (2).
7 Apply approximately 0.1ml of the thermal grease to the top of the
CPU.
8 Align the heatsink on top of the CPU (1).
9 Using the screwdriver, tighten the heatsink's four screws to secure
it to the mainboard (2).
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