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Chapter 5. Troubleshooting
51
Computer screen problems
The screen is blank. Do the following:
- If you are using the AC adapter, or using the
battery, and the battery status indicator is on, press
Fn + to make the screen brighter.
- If the power indicator is blinking, press the power
button to resume from the sleep mode.
- If the problem persists, follow the solution in the
following problem “The screen is unreadable or
distorted.”
- Press Fn+F2 to confirm whether the LCD screen
has been turned off.
The screen is unreadable or
distorted.
Make sure that:
- The display device driver is installed correctly.
- The screen resolution and color quality are
correctly set.
- The monitor type is correct.
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.
Sound problems
No sound can be heard
from the speaker even
when the volume is turned
up.
Make sure that:
- The Mute function is off.
- The headphone jack is not used.
- Speakers is selected as a playback device.
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