How to Set Up Dell U2711?

Right click the desktop, select nvidia control panel, then click on change resolution.

Is the display identified correctly at the top of the page?

Is the resolution set to 2560x1440

Is refresh set at 60hz?
 
oh, are you using a dual link dvi? single link dvi cannot handle resolutions above 1080p
 
^
We had this yesterday:D

Is there a dual link DVI connector on the GTX580?

Both DVI connectors on a GTX 580 are dual link.

The OP just needs to make sure they're using a dual link cable.

And they need to install their monitor drivers so that Windows knows what display modes it supports.
 
^its quite possible the op swapped his current monitor cable which is single link i guess.
 
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