78
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Troubleshooting
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 the power saving
mode by moving the mouse or
pressing any key on the keyboard.
• Check whether the signal cable is
plugged in properly. Re-plug the
signal 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/
DisplayPort/USB
Type-C port
When connected to
some dongle/
docking device at
the port, there is no
video when
unplugging/plugging
the cable from the
notebook
• Unplug the HDMI/DisplayPort/USB
Type-C cable from dongle/docking
device, then plug the docking HDMI/
DisplayPort/USB Type-C cable to the
notebook.
No network
connection
Network dropped or
intermittent
• Check to ensure
USB-C
Prioritization
is set to
High Data
Speed
.
• Do not turn Off the display during
network connection.
