S2415H, stuck in power save mode

I have the same problem with a S2415H screen I bought only 1 week ago. He always crossed the power save mode prior to entry. Now he's stuck in this mode. I tried the sequence here twice, but when I turn on it immediately goes into power save mode. Any suggestions please?

Run the self test
* Disable S2415H and computer
* Unplug the cables VGA or HDMI, the power cable and audio cable from the S2415H
* Wait a minute
* Only connect the power cable to the S2415H
* Turn on the S2415H. You should see one of them =.

Run the built-in Diagnostics
* Disable S2415H
* Press and hold the 1 and 4 button on the front panel simultaneously for two seconds
* A gray screen appears
* Press button 4, once again on the front panel
* A red screen
* Press button 4, once again on the front panel
* A green screen
* Press button 4, once again on the front panel
* A blue screen appears
* Press button 4, once again on the front panel
* A black screen appears
* Press button 4, once again on the front panel
* A white screen
* Press button 4, once again on the front panel
* A text screen

If these test pass, the monitor works. The question is the computer or video card.

* Disable S2415H
* Connect a cable from the computer to the S2415H (either VGA or HDMI, but not both)
* Turn on the computer, then the S2415H

Tags: Dell Peripherals

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