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Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow
.
Self-test
Your monitor provides a self-test feature that allows you to check if 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.
Disconnect all video cables from the monitor. This way, the computer does not have to be
involved.
3.
Turn on the monitor.
If the monitor is working correctly, it detects that there is no signal and one of the following
message appears. While in self-test mode, the power LED remains white.
E2221HN
Dell 22 Monitor
No HDMI Cable
www.dell.com/E2221HN
The display will go into Standby mode in 4 minutes.
E2221HN
?
E2421HN
Dell 24 Monitor
No HDMI Cable
www.dell.com/E2421HN
The display will go into Standby mode in 4 minutes.
E2421HN
?
NOTE: This message also appears during normal operation, when the video
cable is disconnected or damaged.
4.
Turn off your monitor and reconnect the video cable; then turn on your computer and the
monitor.
If your monitor remains dark after you reconnect the cables, check your video controller and
computer.
