My apologies if this thread is posted to a wrong section.

Guys, I am having some trouble on playing Battlefield - Hardline. The problem is very much unusual!!! when the games starts, it begins with window mode. well that is not the problem. after few seconds the screen goes black. So that means, the game is not running !!! wrong !!!! the game is running, when i change the window (using Ctrl+Tab) it shows the game. in short, i can see the game is running when the game window is not active !!! but when the game window is active, the screen is blacked out. i know this is very much unusual problem.
Can anyone please help me ???

My system spec is;

i53470, 8GB RAM, G1-GTX 970, 600Watt TR2 PSU.