Troubleshooting
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Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow the
Safety Instructions
.
Self-Test
Your monitor provides a self-test feature that allows you to check whether your monitor is
functioning properly. If your monitor and computer are properly connected but the monitor
screen remains dark, run the monitor self-test by performing the following steps:
1
Turn off both your computer and the monitor.
2
Unplug the video cable from the back of the computer. To ensure proper Self-Test
operation, remove all video cables from the back of computer.
3
Turn on the monitor.
The floating dialog box should appear on-screen (against a black background), if the monitor
cannot sense a video signal and is working correctly. While in self-test mode, the power LED
remains white. Also, depending upon the selected input, one of the dialogs shown below will
continuously scroll through the screen.
U2419H/U2419HX
U2719D/U2719DX
Dell UltraSharp 24 Monitor
The display will go into Power Save Mode in 4 minutes.
No DP Cable
www.dell.com/support/U2419H
www.dell.com/support/U2419HX
U2419H/U2419HX
or
Dell UltraSharp 24 Monitor
The display will go into Power Save Mode in 4 minutes.
No HDMI Cable
www.dell.com/support/U2419H
www.dell.com/support/U2419HX
U2419H/U2419HX
Dell UltraSharp 27 Monitor
The display will go into Power Save Mode in 4 minutes.
No DP Cable
www.dell.com/support/U2719D
www.dell.com/support/U2719DX
U2719D/U2719DX
or
Dell UltraSharp 27 Monitor
The display will go into Power Save Mode in 4 minutes.
No HDMI Cable
www.dell.com/support/U2719D
www.dell.com/support/U2719DX
U2719D/U2719DX
4
This box also appears during normal system operation, if the video cable becomes
disconnected or damaged.
5
Turn off your monitor and reconnect the video cable; then turn on both your
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your video
controller and computer, because your monitor is functioning properly.
