Lenovo 10057/7712 Personal Computer User Manual


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User Guide
or other computers that may be generating magnetic interference.
2. Move any interfering devices away from the computer.
3. If the problem persists, consult with Lenovo Service.
5.2 Troubleshooting Audio Problems
Problem: No sound from integrated speakers.
Troubleshooting and problem resolution:
• Adjustthewindowsvolumecontrol—Double-clickthespeakericoninthe
lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted. Adjust the volume, bass, or treble controls to eliminate
distortion.
• Reinstalltheaudiodriver.
• Disconnectheadphonesfromtheheadphoneconnector—Soundfromthe
speakers is automatically disabled when headphones are connected to the
computer’s side-panel headphone connector.
Problem: No sound from headphones.
Troubleshooting and problem resolution:
• Checktheheadphonecableconnection—Ensurethattheheadphonecableis
securely inserted into the headphone connector.
• Adjustthewindowsvolumecontrol—Clickordouble-clickthespeakericonin
the lower-right corner of your screen. Ensure that the volume is turned up and
that the sound is not muted.
5.3 Troubleshooting Software Problems
Problem: You are unable exit a running program normally.
Troubleshooting and problem resolution:
1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same
time.
2. Select the Application tab, select the problem program, and then click the End
Task button.
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