Lenovo ThinkCentre Edge 71 (English) User Guide - Page 89

Audio problems, No audio in Windows - area code

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Select the problem your computer is experiencing from the following list: • "Audio problems" on page 77 • "CD problems" on page 78 • "DVD problems" on page 79 • "Intermittent problems" on page 81 • "Keyboard, mouse, or pointing device problems" on page 81 • "Monitor problems" on page 82 • "Networking problems" on page 84 • "Option problems" on page 87 • "Performance and lockup problems" on page 88 • "Printer problems" on page 89 • "Serial port problems" on page 90 • "Software problems" on page 90 • "USB problems" on page 91 Audio problems Select your symptom from the following list: • "No audio in Windows" on page 77 • "An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive" on page 78 • "Sound comes from one external speaker only" on page 78 • "No audio in DOS applications or games" on page 78 No audio in Windows Symptom: No audio in Windows Actions: • If you are using powered external speakers that have an On/Off control, verify that the On/Off control is set to the On position and the speaker power cable is connected to a properly grounded, functional ac electrical outlet. • If your external speakers have a volume control, verify that the volume control is not set too low. • Double-click the speaker icon in the Windows notification area. A master volume-control window opens. Verify that the Mute settings are not checked and none of the volume settings is set too low. • Some models have a front audio panel you can use to adjust volume. If you have a front audio panel, verify that the volume is not set too low. • Verify that your external speakers (and headphones, if used) are connected to the correct audio connector on the computer. Most speaker cables are color-coded to match the connector. Note: When external-speaker or headphone cables are attached to the audio connector, the internal speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion slots, the audio function built into the system board is disabled; use the audio jacks on the adapter. • Make sure that the program you are running is designed for use in the Microsoft Windows operating system. If the program is designed to run in DOS, the program does not use the Windows sound feature and must be configured to use SoundBlaster Pro or SoundBlaster emulation. Chapter 10. Troubleshooting and diagnostics 77

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Select the problem your computer is experiencing from the following list:
•
“Audio problems” on page 77
•
“CD problems” on page 78
•
“DVD problems” on page 79
•
“Intermittent problems” on page 81
•
“Keyboard, mouse, or pointing device problems” on page 81
•
“Monitor problems” on page 82
•
“Networking problems” on page 84
•
“Option problems” on page 87
•
“Performance and lockup problems” on page 88
•
“Printer problems” on page 89
•
“Serial port problems” on page 90
•
“Software problems” on page 90
•
“USB problems” on page 91
Audio problems
Select your symptom from the following list:
•
“No audio in Windows” on page 77
•
“An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive”
on page 78
•
“Sound comes from one external speaker only” on page 78
•
“No audio in DOS applications or games” on page 78
No audio in Windows
Symptom: No audio in Windows
Actions:
•
If you are using powered external speakers that have an On/Off control, verify that the On/Off control is
set to the
On
position and the speaker power cable is connected to a properly grounded, functional ac
electrical outlet.
•
If your external speakers have a volume control, verify that the volume control is not set too low.
•
Double-click the speaker icon in the Windows notification area. A master volume-control window opens.
Verify that the
Mute
settings are not checked and none of the volume settings is set too low.
•
Some models have a front audio panel you can use to adjust volume. If you have a front audio panel,
verify that the volume is not set too low.
•
Verify that your external speakers (and headphones, if used) are connected to the correct audio connector
on the computer. Most speaker cables are color-coded to match the connector.
Note:
When external-speaker or headphone cables are attached to the audio connector, the internal
speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion slots,
the audio function built into the system board is disabled; use the audio jacks on the adapter.
•
Make sure that the program you are running is designed for use in the Microsoft Windows operating
system. If the program is designed to run in DOS, the program does not use the Windows sound feature
and must be configured to use SoundBlaster Pro or SoundBlaster emulation.
Chapter 10
.
Troubleshooting and diagnostics
77