Windows 10: Black SOD-like situation. OS believes there's two monitors.

Alienware X51 upgrade from Windows 8.1

I installed. Go back to computer, screen is black. I move the mouse around and notice the cursor can be seen. I also realize there's a monitor recognized by the OS to the left of my one and only real monitor. I attempted many ways to login and finally was able to do it blindly. Now, the OS still believes there's another monitor. I can see the Taskbar but any opened windows cannot be seen on my monitor. So, i cannot see anything but the Taskbar and my cursor on my screen.

I tried unplugging my monitor and replugging it but it didn't work. I wanted to do a fresh install of Windows 10 but i don't have a key to put in, i upgraded from 8.1, and i wanted to keep my files. I chose that option but it told me to not do that and remove the install medium which made no sense; how can i reinstall the OS without the install medium. I cannot risk losing my files that are in the hard drive. I don't have another monitor to try.

:)

 

Running three monitors Windows randomly shuts down one and flashes on the other.

Okay so here is my situation.

Did the windows 10 update

Desktop

SLI x2 GTX 670

-I have a 34inch LG widescreen in the center

-two dell 24inch monitors on left and right.

One week into the update my LG monitor was black upon wake from sleep and my other monitors were flashing. I had to turn off and UNPLUG ONE of the three monitors to get my LG and the 2nd one to come back and STAY displaying the desktop.

I figured the upgrade was to blame. I did a clean restore and two days every monitor was back up and running....until today. I woke the computer from sleep and again, my LG was black, the left monitor kept flashing the desktop but then black again, the right
one was black. It was only after uplugging my left monitor that the LG and right monitor came back and became stable.

THIS WILL GET WORSE

Before doing my clean restore both left and right monitors had this problem and had to be unplugged. Later my HDMI audio cut out and I had to switch to optical

Things i've tried

-reinstalling the newest Nvidia drivers

-uninstalling any and every display drivers

-turning off windows error in msconfig (like one poster suggested)

-reinstalling windows

-turning off the computer, unplugging the PSU and then draining the power

-booting to safemode

 

When I close my laptop the attached monitors (via replicator) go blank

I have two monitors connected via replicator to my laptop. All HP.

when I close the laptop screen the two monitors go black...like they lose connection.

How do I fix this please?

Thanks

 

This sounds like a driver issue.
You can install windows 10 after upgrading, windows 10 should recognize the key.
You can't install windows without any install media.
Do you have a recent backup from your important files?