Random resolution/framerate changes

[bernd24]

When I play, for example GTA V, and I change the resoulution to 3840x2160 and Graphics to the max ( except Anti-Aliasing, FXAA, MSAA and MSAA reflections), my PC can handle it well. But after a random time I hear a loud "beeeeep" and then my 4k monitor switches from showing "no signal" and black screen (sleep mode & on). My secondary monitor, connected via VGA, shows "out of range 17,2khz/75hz". I think the computer works normal in the background, as I hear the sounds from the game. After this happens I have to reset my PC, and then it works fine again. When I play on FullHD 1920x1080 everything is fine. I tested with Afterburner, that the VRAM doesn't get full and also the RAM doesn't.

My PC:
-GPU: 2x EVGA 970 FTW
-CPU: Intel i7 4790k 4x 4.00 ghz
-Monitor: Asus pb287q

 

[[SET]-=JENNER=-]

It sounds like a driver Problem
Pls Check other driver versions.