HP ProBook 4320t Processor Heat Sink Replacement Guide

Flip the laptop upside down and remove battery by pressing inward on the two latches holding the battery in.

Unscrew the four (2.5 mm Phillips) screws (Use Phillips #0 Screwdriver).

Flip laptop over and open it.

Slightly push up while lifting up on the power button panel to release the panel.

Unscrew the four (2.5 mm Phillips) screws holding the keyboard in (Use Phillips #0 Screwdriver).

Carefully (holding both sides of the keyboard), push up and lift slightly.

Move the keyboard slightly to the left to have access to the keyboard ribbon cable.

Use the black spudger to lift the black latch holding the keyboard ribbon cable.

Unscrew the three (2.5 mm Phillips) screws holding the bottom touchpad panel.

Carefully slide the bottom panel to the right.

Flip the bottom touchpad panel directly towards the screen, being sure to not lift it too high.

Using the black spudger, slightly pry up on the ZIF connector and lift out the wire carefully.

Locate silver holding panel on the left side of the computer.

Unscrew the five silver (2.5 mm Phillips) screws that are holding the panel in.

Unscrew the two black (3.0 mm Phillips) screws that are holding the panel in.

Remove holding panel and put aside.

Disconnect the red, black, and blue ribbon cable connector using the black spudger.

Unscrew the one (2.0 mm Phillips) screw holding in the fan.

Lift fan up carefully and replace.

Unscrew the four (2.5 mm Phillips) screws holding the processor heat sink in (located near the center of the laptop)

Lift slightly on the main component of the heat sink and slowly pull in towards the center (to your right) to free the heat sink.