A kind friend gave me this large monitor, and I am psyched to put it to use with the 2012 Mac Pro I just bought. However, though I can get it to power on and connect via DVI. However, I can't get any image on the screen. So, I thought I would test it with my MB Pro. I have a USB 2.0 to display adaptor. When I connect it to my MB Pro, the Macbook gets darker for a moment, and when I choose Built in Displays from System Preferences, press option the MB Pro seems to be seeing the HP monitor. A window comes up that names the model number. Still, I have no picture on the HP display. Does that mean there is likely something wrong with it? Thank you for any reply.
