Your cable must be connected to any of the two displayport in port not displayport out.
Dell monitor u2414h no displayport cable.
Other possible dell u2414h problems causes.
Checked all cables re booted same thing.
The default cable that is packaged with dell displayport capable displays is the mini displayport mdp to displayport dp cable if your system does not support a displayport connection you must purchase the appropriate cable for your system.
You may connect them in any one of those two.
Cable connected to the wrong displayport input.
Turn the monitor off disconnect every cable from the monitor including the power cord press and hold in the monitor power button for 15 seconds reconnect all cabling to the monitor and the computer turn the monitor on then the computer.
Cannot view the dvd included with the monitor.
Looking at the rear bottom of the u2414h left to right the ports are ac power dell soundbar mounting displayport in 1 2 mdisplayport in1 2 displayport out mst 1 2 hdmi in mhl 1 4 audio line out usb upstream three usb downstream your laptop displayport cable should be plugged into one of the displayport in ports not the displayport out port.
No display port cable.
This article provides information on serial number service tag and regulatory stickers are no longer found on the outside of the dell ultrasharp monitor.
Turns out that on balanced power windows may be turning off dp displayport functionality.
The display goes into power save mode.