Yesterday I updated the drivers to the new drivers released by nvidia on 4/13 specifically for the GTA V release. Today i start GTA V and about 15 seconds into playing the whole PC locked up.. after restarting when I got to the windows login screen both monitors (one displayport, one DVI) went black and acted like there was no input. So i thought it was driver related so i started windows in safe mode and it got past the login screen. I uninstalled all the drivers in safe mode and then rebooted and could boot windows in non-safemode and proceeded to install official nvidia drivers from 2/10. After rebooting it was the same problem.
Luckily i stumbled upon this thread Has ANYONE with a new gtx 980/970 successfully used displayport connection to monitor without issue? : nvidia
and they said to try it without displayport. I unplugged the only displayport i was using and after a reboot I now have not had the problem. Apparently there is a big problem with the 900 series GTX cards and displayports
I've now tried 3 official drivers from different release dates but every time i plug in a display port cable all monitor outputs go black.
Really sucks because I cant get 144hz on both monitors unless I use DP