Lenovo ThinkStation P910, Hardware Maintenance Manual

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– For Windows 7: Click the volume icon in the Windows notification area on the taskbar. Then, click
the speaker icon on top of the volume control.
– For Windows 10: Right-click the volume icon in the Windows notification area on the taskbar. Then,
click Open Volume Mixer and select the desired speaker.
Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification
area.
Then, click the Levels tab and ensure that the Balance settings are set correctly.
CD or DVD problems
A CD or DVD does not work.
Solutions:
• Ensure that the power cable and signal cable are securely connected to the drive.
• Ensure that the disc is inserted correctly, with its label up.
• Ensure that the disc you are using is clean. To remove dust or fingerprints, wipe the disc clean with a soft
cloth from the center to the outside. Wiping a disc in a circular motion might cause loss of data.
• Ensure that the disc you are using is not scratched or damaged. Try inserting another disc that you
know is good. If you cannot read from a known-good disc, you might have a problem with your optical
drive or the cabling to your optical drive.
• If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the
disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem.
A bootable recovery medium, such as the Product Recovery CD, cannot be used to start your
computer.
Solution:
Ensure that the CD or DVD drive is set as the top priority of the Boot Priority Order in the Setup Utility
program. Refer to “Selecting a temporary startup device” on page 70 for information about viewing and
changing the startup sequence.
Note: On some computer models, the startup sequence is permanently set and cannot be changed.
A black screen is displayed instead of the DVD video.
Solutions:
• Restart the DVD player program.
• Try a lower screen resolution or color depth.
• Close any open files, and then restart the computer.
A DVD movie does not play.
Solutions:
• Ensure that the disc surface is clean and not scratched.
• Check the disc or package for regional coding. You might need to purchase a disc with coding for
the region where you are using your computer.
No audio or only an intermittent audio comes out while a DVD movie is playing.
Solutions:
• Check the volume control settings on your computer and on your speakers.
Chapter 7
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Troubleshooting, diagnostics, and recovery
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