Second Monitor randomly stopped working (No Signal)

[mathewh]

I was on my PC playing Skyrim, when I had to go eat so I left my PC on and went upstairs, ate, came back down around 20-30minutes later to find my second monitor (Acer XFA240) turned off. I turned it on and it said no signal, and it wasn't showing up on NVIDIA Control Panel. I replugged it in and now the monitor shows up on my NVIDIA Control Panel, but still gets no signal, and turns itself off, and as soon as I turn it back on, it just disappears from my NVIDIA Control Panel (the Set up Multiple Displays tab) My primary monitor, Alienware 25inch works just fine. I've tried switching Displayport cables, flipping the ports its plugged into, restarting my PC, shutting it off for a little while and coming back, nothing is working. (I plugged my Alienware monitor into the port I had the Acer monitor plugged into it, no problems, also used the same coord on my Alienware monitor and again no issues, I have no clue what is happening) I hope I explained this clearly, it was pretty hard to explain. Please help
Edit: Also when I boot up my PC it brings the logo of my PC onto my Acer monitor, and when I get to the desktop I am able to drag my mouse over to the other monitor, but the screen is black

 

[swaggycreeper11]

I guess that your second screen may have stopped working or something. How much time have you had this monitor?