Samsung NV20 Manual page 86

DOS Mode Related
Q1 DOS prompt is not displayed normally in full DOS screen mode.
A When graphic setting is set to notebook and the "Full Screen" option is set, this
problem may occur if you switch between full DOS screen mode and DOS
window mode. To resolve the problem, right-click on the desktop, and click
Graphic Options > Graphic Settings, then clear the "Full Screen" check box. Or,
click Graphics icon on the Windows taskbar and click Graphic Options, and then
set the Monitor Alignment item to "Disable". We also recommend not to switch
repeatedly between full DOS screen mode and DOS window mode.
To release the full screen mode with a shortcut key
Press the <Ctrl> + <Alt> + <F11> keys to release full screen. First, release full
screen mode on Windows and then switch to full DOS screen to ensure that
the screen is displayed normally.
Q2 When I connected a TV in DOS mode and start the computer, the screen is
not displayed.
A DOS mode does not support TV output. Start your computer in LCD mode and
then connect the TV in Windows mode.
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