HP COMPAQ PRESARIO G42 Maintenance And Service Manual page 99

Before removing the processor, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
5. Remove the following components:
a. Hard drive (see
b. Optical drive (see
c. Keyboard (see
d. Top cover (see
e. Speaker assembly (see
f. Display assembly (see
g. System board (see
h. Fan/heat sink assembly (see
Remove the processor:
1. Turn the processor locking screw (1) one-half turn counterclockwise until you hear a click.
Battery on page 45).
Hard drive on page 46)
Optical drive on page
Keyboard on page 56)
Top cover on page 58)
Speaker assembly on page
Display assembly on page
System board on page
Fan/heat sink assembly on page
49)
61)
73)
80)
87)
Component replacement procedures
91