Second monitor not detected Windows 8

Hi all

The title pretty much everything said. Windows 8, two monitors to flat screen of ACER, HP pc, worked fine. I went to the control panel and although both monitors are on and work the 2nd is not detected. By clicking on "detect" a small window shows "another view undetected."
The display on the second monitor as I said is on, but the mouse pointer does not move on the 2nd monitor and my desktop icons that were there is now on my 1st monitor. I tried to update the software for graphics card and monitor software as well, both are up to date.
I tried to contact Microsoft Support, but I guess that there was a problem of mass with the update because I can't seem to online or over the phone.
I tried to restore the computer to its last restore point, but that did not help.

Can anyone suggest a solution?

Thank you very much

Original title: update 2nd monitor is not recognized after the last windows of nights.

CORRECTION *.

Reinstall the drivers worked. I didn't know what I had to do was desempilement monitors and place them side by side in the Panel. (Right-click on the display, the screen resolution, drag a monitor so that it is next to each other instead of one on top of the other)
There is just a nut loose on the keyboard here. (ME)
Thanks for your help.

Tags: Windows

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