HP (Hewlett-Packard) HP 530 ユーザーズマニュアル

Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords

and CMOS settings to be cleared.

RTC battery

438556-001

Before removing the RTC battery, follow these steps:

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.

Disconnect all external devices connected to the computer.

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.

Remove the battery (see 

Remove the following components:

. Hard drive (see 

. Memory/WLAN module compartment cover (see 

. Optical drive (see 

)

. Switch cover (see 

. Keyboard (see 

Display assembly (see 

)

. Base enclosure (see 

)

Remove the RTC battery:

▲

Use a non-conductive, flat-bladed tool to pry the RTC battery out of the socket.

54 Chapter 4   Removal and replacement procedures