Dell P2723D 27" 1440p Monitor - Manual (Page 70)

70 │ 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 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/
DisplayPort 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 cable from
dongle/docking device,
then plug the docking
HDMI/DisplayPort cable to
the notebook.