Acer Altos G5450 Series - Manual (Page 68)

3 System upgrade 50
(3) Grasp the processor by its edges and lift it out of its socket.
(4) Store the old processor inside an anti-static bag.
(5) Remove the new processor from its protective packaging.
5 Install the new processor.
(1) Hold the processor by its edges, then insert it in the socket.
Make sure that the alignment tabs on the socket fit the two
notch located on the edge of the processor. The pins are keyed
in such a way that you cannot install the processor in the
wrong orientation without bending the pins.
(2) Close the retention plate.
(3) Engage the load lever back into place.
6 Apply the thermal interface material.
(1) Use an alcohol pad to wipe off the old thermal grease from
both the HSF assembly and the processor socket retention
plate.
(2) Apply a thin layer of an Acer-approved thermal interface
material before installing the HSF.
Make sure that only a very thin layer is applied so that both
contact surfaces are still visible.