Download the Nvidia GeForce 337.81 Beta driver as released by NVIDIA.
Nvidia released a new GeForce driver. The driver fixes an issue faced with Dell's compact 4K Ultra HD monitors, specifically P3214Q and UP2414Q, in which the GeForce GPU would give out "half" or no display (Ultra HD resolution is handled over multiple TMDS links).
Watch dogs SLI profile
Wolfenstein SLI profile
3840x2160 resolution with SLI now on the U28D590D and selected UHDA monitors
SLI and multi-GPU configurations support single tile monitors
Contains fix for this the monitor display blank screen issue that started with R325 drivers
We have a discussion thread open on this driver right here. The final release notes are still pending though. We will update this post later.