U3415W Doesn't Extend to Edge of Monitor

Currently have two U3415W monitor connected to my Dell M3700 with nVideo K2000M video card. Output is Laptop DP > input mDP > Output DP > Input DP  The edge of my Windows 7 desktop doesn't go to the edge of the monitor. I have changed the monitor to 20:9 and Auto Resize without luck. My current resolution is 3440x1440 for both monitors.  

Anyway I can get the desktop to the edge of the screen?

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