Lenovo Y710 warranty „ Sound Problems, Incorrect characters appear on the screen

Chapter 4. Troubleshooting

Incorrect characters appear on the screen.

Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced.

Missing, discolored, or bright dots appear on the screen every time you turn on your computer.

This is an intrinsic characteristic of the TFT technology. Your computer’s display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time.

A message, “Unable to create overlay window,” appears when you try to start DVD playback.

-or-

You get poor or no playback while running video playback, DVD playback, or game applications.

Do either of the following:

ƒIf you are using 32-bit color mode, change the color depth to 16-bit mode.

ƒIf you are using a desktop size of 1280×1024 or larger, reduce the desktop size and the color depth.

„Sound Problems

No sound can be heard from the speaker even when the volume is turned up.

Make sure that:

ƒThe Mute function is off.

ƒThe headphone jack is not used.

ƒSpeakers is selected as a playback device.

To check the settings, right-click the Sound icon at the bottom-right corner of the task bar and select Playback from the pull down menu.

To change the playback device settings to Speakers, do as follows:

1.When all players are turned off, select Speakers and click Set Default button.

2.Click the OK button to save the settings.

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