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User Guide
Problem: Ripple on screen.
Troubleshooting and problem resolution:
1. Check to see if any of the following devices are located less than one meter
from the computer: refrigerators, electric fans, electric dryers, UPS systems,
regulators, fluorescent lamps or other computers that may be generating
magnetic interference.
2. Move any interfering devices away from the computer.
3. If the problem persists, contact Lenovo Service.
4.2 Troubleshooting Audio Problems
Problem: No sound from the integrated speakers.
Troubleshooting and problem resolution:
• AdjusttheWindowsvolumecontrol—double-clickthespeakericoninthe
lower-right corner of your screen. Ensure that the volume is turned up and the
sound is not muted. Adjust the volume, bass, or treble controls to eliminate
distortion.
• Reinstalltheaudiodriver.
• Disconnectanyheadphonesfromtheheadphoneconnector—soundfrom
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:
• Checktheheadphonecableconnection—ensurethattheheadphonecableis
securely inserted into the headphone connector.
• AdjusttheWindowsvolumecontrol—clickordouble-clickthespeakericonin
the lower-right corner of your screen. Ensure that the volume is turned up and
the sound is not muted.
4.3 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, then click the End
Task button.