Lenovo IdeaPad Y510, Руководство пользователя

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Chapter 3. Troubleshooting
36
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:
ƒ
If you are using 32-bit color mode, change the color depth to 16-bit mode.
ƒ
If 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:
ƒ
The Mute function is off.
ƒ
The headphone jack is not used.
ƒ Speakers 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.