Troubleshooting Audio Problems - Lenovo IdeaCentre Q150 4081 User Manual

or monitor does not support this new resolution, the system will recovery to the
original resolution within 20 seconds.
Set the refresh rate of your TV or monitor to less than 60 Hz to avoid damage to
your TV or monitor.
If there is no image displayed on the TV or monitor after setting a new refresh
rate, turn off your TV or monitor and wait for a moment before restarting.
For TV, you may switch the input style to another and then switch it back to
make your TV display normally.
Problem: Ripple on screen
Troubleshooting and problem resolution:
1. Check for devices located less than one meter from the computer such as
refrigerators, electric fans, electric dryers, UPSs, 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, consult your display devices supplier.

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, and treble controls to
eliminate distortion.
• Reinstall the audio driver
• Disconnect any headphones from the headphone socket — sound from the
speakers is automatically disabled when headphones are connected to the
computer's side-panel headphone socket.
• Remove and reconnect the HDMI connector, restart the computer, and set the
HDMI as the audio output mode (for example via the control panel)
Note: IdeaCentre Q0 supports HDMI audio and video output. To learn
more about HDMI, go to the web site at: http://www.hdmi.com/
Problem: No sound from headphones
Troubleshooting and problem resolution:
• Check the headphone cable connection — ensure that the headphone cable is
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User Guide
2010.4.20 10:47:01 AM