Dell E2724HS User Manual page 56

Dell P2418HZ
NOTE: This box also appears during normal system operation, if 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.
56 │ Troubleshooting
Dell 27 Monitor
? No DP Cable
The display will go into Standby mode in 4 minutes.
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E2724HS