Windows 7 doesn't recognize second monitor

[NOICE88]

So i recently factory restarted my computer and like it said unplugged everything except keyboard mouse and monitor. I had 2 monitors plugged in so i thought that didn't matter. So when everything was finished i logged in and my second monitor was duplicating the first one. So i went to screen resolution and it said i only had one monitor and i dont have a second one. But my second one is plugged in and its duplicating the first monitor, so screen resolution didnt help, I cant "extend these displays" cause i "dont have a second one"
Any help?

 

[Mellon Head]

I'll ask the obvious. Did you reinstall the drivers for your graphics card?

And please fill out your system specs so that we can help you better.