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Troubleshooting
Specific
Symptoms
What you experience Possible Solutions
No input signal
when user controls
are pressed
No picture, the LED
light is white
• Check the signal source. Ensure
the computer is not in Standby
Mode by moving the mouse
or pressing any key on the
keyboard.
• Check if the video cable is
plugged in properly. Disconnect
and reconnect the video cable if
necessary.
• Reset the computer or video
player.
The picture does
not fill the entire
screen
The picture cannot fill
the height or width of
the screen
• Due to different video formats
(aspect ratio) of DVDs, the
monitor may display in full
screen.
• Run the built-in diagnostics.
No video at HDMI
or DisplayPort
When connected to
some dongle or docking
device at the port,
there is no video when
unplugging or plugging
the cable from the
notebook
• Unplug the HDMI or DisplayPort
cable from dongle or docking
device, then plug the docking
HDMI or DisplayPort cable to the
notebook.