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Troubleshooting
Common symptoms What you experience Possible solutions
Synchronization problems Screen is scrambled or
appears torn
• Reset the monitor to factory settings. For more information, see
FACTORY RESET.
• Perform monitor self-test feature check to determine if the
scrambled screen appears in self-test mode.
• Check for bent or broken pins in the video cable connector.
• Restart the computer in the safe mode.
Safety-related issues Visible signs of smoke or
sparks
• Do not perform any troubleshooting steps.
• Contact 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 self-test 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 Built-in
diagnostics.
Wrong color in HDR mode Color banding in the
pictures
• Try to lower down the frequency (DP: 3840 x 2160 at 60 Hz,
HDMI: 3840 x 2160 at 60 Hz).
Screen image is too small Image is centered on
screen, but does not fill
entire viewing area
• Check the ASPECT RATIO settings in the DISPLAY settings 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 cord, 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 blue
• 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 Built-in
diagnostics.
The displayed pictures
appear incorrectly when
the DP/HDMI cable is
connected through a
USB-C adapter or dock to
your laptop or desktop
Display will freeze, has
black screen or display
abnormal screen
Do not use a USB-C adapter or dock. Connect the DP/HDMI cable
directly to your laptop or desktop.
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