IBM 621410U Hardware Maintenance Manual - Page 43

Power, ACPI BIOS IRQ, ACPI Standby Mode, APM BIOS Mode, Power Savings, After Power Failure, Attention

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Page 43 highlights

v Change the position of the CMOS recovery jumper. See "Erasing a lost or forgotten password (clearing CMOS)" on page 28. v Remove the battery and then install the battery. Administrator password: Select this choice to set an administrator password. The administrator password provides access to all choices on the IBM Setup Utility main menu. You can set, change, or delete both the administrator and user passwords and enable a user to change the user password. Attention: If you set an administrator password and then forget it, you cannot override or remove it. You must replace the system board. The following table provides a summary of the password features. Table 7. Power-on and administrator password features Type of password Results User password v Type the password to complete the system startup. v A limited set of choices is available on the IBM Setup Utility main menu. Administrator password v No password is required to start the system. v Type the password to access the IBM Setup Utility program. v All choices are available on the IBM Setup Utility main menu. Administrator and user password v You can type either password to complete the system startup. v The administrator password provides access to all choices on the IBM Setup Utility main menu. You can set, change, or delete both the administrator and user passwords, and enable you to change the user password. v The user password provides access to a limited set of choices on the IBM Setup Utility main menu. This limited access might include changing or deleting the power-on password. Power Select this choice to enable or disable system power settings. ACPI BIOS IRQ: This field controls what IRQ the Advanced Configuration and Power Interface (ACPI) uses. ACPI Standby Mode: Select which power level your computer uses in standby mode. If S1 is selected, power is maintained to all devices, but all processor activity is halted. If S3 is selected, power is maintained only for the main memory. Exit from the S3 state might not be supported by all installed adapters. APM BIOS Mode: This field controls the Advanced Power Management (APM) support to the operating system. Enable this setting when your operating system supports APM-enabled computers. When this option is set to disabled, all APM BIOS support is disabled. Power Savings: Maximum power savings conserves the greatest amount of system power. Maximum performance conserves power but optimizes the performance of the computer. To alter these settings, choose Customized. To turn off power management, choose Disabled. After Power Failure: This field controls whether the system will stay on after ac power is removed and then restored. Select Power On if you use a power strip to Configuration 35

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v
Change the position of the CMOS recovery jumper. See
“
Erasing a lost or
forgotten password (clearing CMOS)
”
on page 28.
v
Remove the battery and then install the battery.
Administrator password:
Select this choice to set an administrator password. The
administrator password provides access to all choices on the IBM Setup Utility
main menu. You can set, change, or delete both the administrator and user
passwords and enable a user to change the user password.
Attention:
If you set an administrator password and then forget it, you cannot
override or remove it. You must replace the system board.
The following table provides a summary of the password features.
Table 7. Power-on and administrator password features
Type of password
Results
User password
v
Type the password to complete the system startup.
v
A limited set of choices is available on the IBM Setup Utility
main menu.
Administrator password
v
No password is required to start the system.
v
Type the password to access the IBM Setup Utility program.
v
All choices are available on the IBM Setup Utility main menu.
Administrator
and
user
password
v
You can type either password to complete the system startup.
v
The administrator password provides access to all choices on
the IBM Setup Utility main menu. You can set, change, or
delete both the administrator and user passwords, and enable
you to change the user password.
v
The user password provides access to a limited set of choices
on the IBM Setup Utility main menu. This limited access might
include changing or deleting the power-on password.
Power
Select this choice to enable or disable system power settings.
ACPI BIOS IRQ:
This field controls what IRQ the Advanced Configuration and
Power Interface (ACPI) uses.
ACPI Standby Mode:
Select which power level your computer uses in standby
mode. If S1 is selected, power is maintained to all devices, but all processor
activity is halted. If S3 is selected, power is maintained only for the main memory.
Exit from the S3 state might not be supported by all installed adapters.
APM BIOS Mode:
This field controls the Advanced Power Management (APM)
support to the operating system. Enable this setting when your operating system
supports APM-enabled computers. When this option is set to disabled, all APM
BIOS support is disabled.
Power Savings:
Maximum power savings conserves the greatest amount of
system power. Maximum performance conserves power but optimizes the
performance of the computer. To alter these settings, choose Customized. To turn
off power management, choose Disabled.
After Power Failure:
This field controls whether the system will stay on after ac
power is removed and then restored. Select Power On if you use a power strip to
Configuration
35