Samsung NP20 User Manual page 69

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Problem
Nothing appears on the
external monitor when you
switch the display to it.
The LCD screen doesn't fit
the panel size (1024 X 768)
when playing games or using
applications.
The external monitor
displays flashes or waves.
Cannot toggle between CRT
and LCD while playing 3D
games, MPEG files or DVD
files.
Cannot see display screen
after uninstalling the video
driver.
There is LCD or CRT has
noise (speckles, lines or
raged edges) on the
picture when playing a
MPEG file with the Media
player/ DVD software or
using the USB camera.
The screen is distorted when
switching from windowed
DOS screen to full DOS
screen or entering Hibernate
Mode.
Action
Is the monitor properly connected to the computer?
Is the monitor's power cord connected to an AC wall
outlet? Check the brightness and contrast controls on
the monitor. Does the program appear on the LCD
panel instead of the external monitor? If so, press
<Fn+F3> to switch to the monitor. Try turning the
monitor off and on again.
Case 1 - Dual Display mode
"Dual Display" mode does not support panel fitting.
Case 2 - LCD Only Display mode
Enable the "Panel Fit" to fix this problem.
1. Right-click touchpad or mouse button.
2. Select Graphics Options > Panel Fit > Enable.
Check the cables between the monitor and the
computer. Are they properly installed?
If you are using the Multimonitor mode, you can not
use the <Fn+F3> key combination and also you
cannot use this function in 3D games using
Direct-X.
First start in "Safe Mode" then restart Windows. It is
recommended that you reconnect the CRT and set to
"CRT and LCD" before you uninstall the video
driver. Restart Windows and access the Recovery
Boot Menu by pressing the F8 key after the initial
Samsung splash screen. Select starting the system in
VGA mode. Reinstall the Video Driver.
Adjust the resolution and the colour to 1024 x 768
and 32 bit to display clearly, or avoid playing two
programs at the same time.
Disable the "Panel Fit" to avoid this problem.
1. Right-click touchpad or mouse button.
2. Select Graphics Options > Panel Fit > Disable.
Troubleshooting 61

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