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Troubleshooting
Common
symptoms
What you experience Possible solutions
Safety-related
issues
Visible signs of smoke or
sparks
• Do not perform any troubleshooting steps.
• Contacting Dell immediately.
Intermittent
problems
Monitor malfunctions on and
off
• Ensure that the video cable connecting the monitor to the computer is
connected properly and is secure.
• Reset the monitor to factory settings. For more information, see FACTORY
RESET.
• Perform monitor Self-test feature check to determine if the intermittent
problem occurs in selftest mode.
Missing color Picture missing color • Perform monitor Self-test feature check.
• Ensure that the video cable connecting the monitor to the computer is
connected properly and is secure.
• Check for bent or broken pins in the video cable connector.
Wrong color Picture color not good • Reset all settings under the GAME menu to the factory defaults using RESET
GAME.
• Change the INPUT COLOR FORMAT to RGB or YCbCr/YPbPr in the
Display settings OSD.
• Run the built-in diagnostics. For more information, see SELF-DIAGNOSTIC.
Wrong color in
HDR mode
Color banding in the
pictures
Try to reduce the frequency (DP: 3440 x 1440 at 60 Hz, HDMI: 3440 x 1440
at 60 Hz).
Screen image is
too small
Image is centered on the
screen, but does not fill the
entire viewing area
• Check the ASPECT RATIO settings in the DISPLAY menu OSD.
• Reset the monitor to factory settings. For more information, see FACTORY
RESET.
Cannot adjust the
monitor with the
joystick button
OSD does not appear on
the screen
• Turn off the monitor, unplug the power cable, plug it back, and then turn on
the monitor.
• Check whether the OSD menu is locked. If yes, move and hold the joystick
button up/down/left/right for 4 seconds to unlock. For more information,
see Locking the control buttons.
No input signal
when user controls
are pressed
No picture, the LED light is
on
• Check the signal source. Ensure that 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), the monitor may display in full
screen.
• Run the built-in diagnostics. For more information, see SELF-DIAGNOSTIC.
The displayed
pictures appear
incorrectly when
the DP/HDMI
cable is connected
through a USB
Type-C adapter
or dock to your
laptop or desktop
Display will freeze, has
black screen or will display
abnormal screen
Do not use a USB Type-C adapter or dock. Connect the DP/HDMI cable
directly to your laptop or desktop.
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