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Troubleshooting 55
Product Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
Screen image
is too small
Image is
centered on
screen, but
does not fill
entire viewing
area
• Check the Aspect Ratio setting in
Display Settings OSD.
• Reset the monitor to Factory Settings.
Cannot
adjust the
monitor with
the buttons
on the front
panel
OSD does not
appear on the
screen
• Turn O the monitor, unplug the power
cord, plug back, and then turn On the
monitor.
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 to make sure Video Source to
DisplayPort or Mini DisplayPort or HDMI
is powered and playing video media.
• 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 dierent video formats (aspect
ratio) of DVDs, the monitor may display
in full screen.
• Run the built-in diagnostics.
Unable to
see Post-
screen or
Vbios setting
May miss the
post screen
or Vbios
setting during
boot up
• Disable sleep mode in monitor and
reboot PC.
Turn O the Monitor Sleep in Energy
Settings OSD, then reboot the PC to
show the Post-screen or Vbios.