Enabling Or Disabling A Device - Lenovo IdeaCentre B540 Hardware Maintenance Manual

To set a Power-On Password, do the following:
1. Start the Lenovo BIOS Setup Utility program (See "Starting the Lenovo BIOS Setup Utility program" on
page 13.)
2. From the Security menu, select Set Power-On Password and press the Enter key.
3. The password dialog box will be displayed. Type the password, and press the Enter key.
4. Re-type the password to confirm, if you type the password correctly, the password will be installed.
To change a Power-On Password, do the following:
1. Start the Lenovo BIOS Setup Utility program (See "Starting the Lenovo BIOS Setup Utility program" on
page 13.)
2. From the Security menu, select Set Power-On Password and press the Enter key.
3. The password dialog box will be displayed. Type the current password then press the Enter key.
4. Type the new password, then press the Enter key. Re-type the password to confirm the new password,
if you type the new password correctly, the new password will be installed. A setup notice will display
that changes have been saved.
To delete a previously set Power-On Password, do the following :
1. From the Security menu, select Set Power-On Password and press the Enter key.
2. The password dialog box will be displayed. Type the current password and press the Enter key.
3. To delete the Power-On Password, Enter blank fields for each new password line item. A setup
notice will display that changes have been saved.
4. Return to the Lenovo BIOS Setup Utility program menu and select the Exit option.
5. Select Save changes and Exit from the menu.

Enabling or disabling a device

The Devices options is used to enable or disable user access to the following devices:
USB Functions
ATA Drive Setup
Onboard Audio Controller
Onboard Ethernet Controller or Boot Agent
To enable or disable a device, do the following:
1. Start the Setup Utility program (see "Starting the Setup Utility program" on page 13).
2. From the Setup Utility program menu, select Devices.
3. Select:
Select whether to enable or disable USB (Universal Serial
Bus) functions. If the functions are disabled, no USB
devices can be used.
Select IDE or ACHI mode. Device driver support is
required for ACHI mode. Depending on how the hard disk
image was installed, changing this setting may prevent
the system from booting.
Select whether to enable or disable the Onboard Audio
Controller, when feature is set to Disabled all devices
connected to the audio connectors (e.g. a headphone or
a microphone) are disabled and can't be used.
Select whether to enable or disable Onboard Ethernet
Controller, or select whether to enable or disable load
onboard PXE (Preboot Execution Environment), or
SMC (Secure Managed Client). This feature will allow
the computer to boot from a server image.
Chapter 5
15
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Using the Setup Utility