just to clarify the dell monitor has the following input ports on back
i'm not sure why it has two hdmi ports, it would of been better to have a display port so I could daisy chain the monitors, but oh well.
Thank you for letting me know about this. Can you please provide me with the dxdiag report, system report and graphics report?
How to get it?
Dxdiag Report: Type dxdiag in Start Menu> open> Save> Attach using Advanced Editor Options.
System Information: Click Start> Type System Information> Click File> Export> Save File> Attach using Advanced Editor Options.
Graphics Report: Right click on desktop> Graphics Properties> Options> Drop Down Menu> Information Center> Save> Attach using Advanced Editor Options.
Please attach all files.
Please note that I have tested this from my side with the same model you have (D53427RKE) and it was working just fine for me.
Please find attach the configuration I used and Step by Step how I did it. You may also find images of the LAB I created.
I hope this helps!