HP Presario C700 HP G7000 Notebook PC and Compaq Presario C700 Notebook PC - M - Page 83

RTC battery, Switch cover see - power on password

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RTC battery NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. Description RTC battery (includes double-sided tape) Spare part number 454947-001 Before removing the RTC battery, 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 Battery on page 40). 5. Remove the following components: a. Hard drive (see Hard drive on page 41) b. Optical drive (see Optical drive on page 48) c. Keyboard (see Keyboard on page 50) d. Switch cover (see Switch cover on page 53) e. Display assembly (see Display assembly on page 55) f. Top cover (see Top cover on page 62) g. System board (see System board on page 72) Remove the RTC battery: 1. Turn the system board upside down, with the audio connectors toward you. 2. Disconnect the RTC battery cable (1) from the system board. Component replacement procedures 75

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RTC battery
NOTE:
Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords
and CMOS settings to be cleared.
Description
Spare part number
RTC battery (includes double-sided tape)
454947-001
Before removing the RTC battery, 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
Battery
on page
40
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive
on page
41
)
b
.
Optical drive (see
Optical drive
on page
48
)
c
.
Keyboard (see
Keyboard
on page
50
)
d
.
Switch cover (see
Switch cover
on page
53
)
e
.
Display assembly (see
Display assembly
on page
55
)
f
.
Top cover (see
Top cover
on page
62
)
g
.
System board (see
System board
on page
72
)
Remove the RTC battery:
1
.
Turn the system board upside down, with the audio connectors toward you.
2
.
Disconnect the RTC battery cable
(1)
from the system board.
Component replacement procedures
75