Lenovo ThinkCentre M79, Hardware Maintenance Manual

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Advanced configuration and power interface (ACPI) BIOS
Being an ACPI BIOS system, the operating system is allowed to control the power management features
of the computer and the setting for Advanced Power Management (APM) BIOS mode is ignored. Not
all operating systems support ACPI BIOS mode.
Automatic Power-on features
The Automatic Power-On features within the Power Management menu allow you to enable and disable
features that turn on the computer automatically.
• Wake Up on Alarm : You can specify a date and time at which the computer will be turned on
automatically. This can be either a single event or a daily event.
• Wake on LAN : If the computer has a properly configured token-ring or Ethernet LAN adapter card that is
Wake on LAN-enabled and there is remote network management software, you can use the Wake on LAN
feature. When you set Wake on LAN to
Enabled , the computer will turn on when it receives a specific
signal from another computer on the local area network (LAN).
To enable the Wake on LAN function or the Wake Up on Alarm function on the Windows 8.1 operating
system, do the following:
1. Open Control Panel.
2. Click Hardware and Sound
➙
Power Options .
3. In the left panel, click Choose what the power button does .
4. In the Shutdown setting section, clear Turn on fast startup .
Note: If the settings are unavailable, click Change settings that are currently unavailable .
5. Click Save changes .
Setting the computer volume
An audio controller is built into the computer system board to support the audio connectors on your
computer. See “Audio features” on page 37. Your computer might also have a high-performance audio card.
The audio card enables you to enjoy sound with multimedia applications, record and play back sound, and
work with speech-recognition software. The connectors on the audio card vary by audio card.
This section provides instructions on how to set the computer volume from the desktop and Control Panel.
Setting the volume from the desktop
To set the computer volume from the desktop, do the following:
1. Click the volume icon on the taskbar. You can locate the taskbar at the bottom-right corner of the
desktop.
2. Move the slider up to increase or down to decrease the volume. Click the mute-speaker icon to turn off
the audio.
If the volume icon is not on the taskbar, add the volume icon to the taskbar. To add the volume icon,
do the following:
• For Windows 7:
1. From the Windows desktop, click Start ➙ Control Panel ➙ Appearance and Personalization .
2. In the Taskbar and Start Menu section, click Customize icons on the taskbar .
3. Click Turn system icons on or off and change the volume behaviors from Off to On .
Chapter 3
.
Using your computer
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