4. Click
OK
to save the new settings.
• For Windows 8.1:
1. Open Control Panel, and click
Appearance and Personalization
.
Note:
For detailed information on how to open Control Panel on Windows 8.1, see “Accessing
Control Panel on the Windows 8.1 operating system” on page 51.
2. In the
Taskbar and Navigation
section, click
Customize icons on the taskbar
.
3. Click
Turn system icons on or off
and change the volume behavior from
Off
to
On
.
4. Click
OK
to save the new settings.
Setting the volume from Control Panel
To set the computer volume from Control Panel, do the following:
1. On the Windows 7 operating system, click
Start
➙
Control Panel
➙
Hardware and Sound
. On the
Windows 8.1 operating system, open Control Panel and click
Hardware and Sound
.
Note:
For detailed information on how to open Control Panel on Windows 8.1, see “Accessing Control
Panel on the Windows 8.1 operating system” on page 51.
2. In the
Sound
section, click
Adjust system volume
.
3. Move the slider up to increase or down to decrease the volume.
Using a disc
This section provides information about the following topics:
•
“Using the optical drive” on page 48
•
“Handling and storing a disc” on page 49
•
“Playing and removing a disc” on page 49
•
“Recording a disc” on page 49
Using the optical drive
Depending on the model, your computer is equipped with one of the following optical drives:
• CD-ROM drive: Used to read CDs only.
• DVD-ROM drive: Used to read DVDs and CDs.
• BD-ROM drive: Used to read blu-ray discs (BDs), DVDs, and CDs.
• Recordable optical drive: Used to read and record a disc.
When using the optical drive, follow these guidelines:
• Do not place the computer in a location where the drive is exposed to any of the following conditions:
– High temperature
– High humidity
– Excessive dust
– Excessive vibration or sudden shock
– An inclined surface
– Direct sunlight
• Do not insert any object other than a disc into the drive.
48
ThinkCentre M79 Hardware Maintenance Manual
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