So I have connected a second display to my GTX 1060, and it only shows a black screen without any sign of life.
If I disconnect the VGA cable a notification pops up on the monitor saying CHECK SIGNAL CABLE, after I reconnect it the screen goes black again.
The monitor is fully operational as it shows the notification, and the graphics card is fully operational too as I am writing this on the 1st monitor connected to the same GPU. I am using a DVI to VGA adapter between the graphics card and the blank monitors VGA cable.
The monitor Is also shown in the Device Manager of the PC