I have two dell 2001fps. Got one hooked up on to the comp with the blue cord and one with the white cord. The second monitor is blank. It shows picture when the computer first boots up but it goes blank as soon as the blue user selection screen comes up. I've checked the display properties and the second monitor isn't showing up. 
I'm about to pull my hair out. Any help?
I'm about to pull my hair out. Any help?