It was like this. Last year the game worked and I did not try to play up this month bought a GTX 670.
As DAI did not work and had already tried everything, I thought it was power problem and buy a PSU of 600 real watts.
The game still does not work and is the only one with which I have problems.
Fallout 4, heroes of the storm, Overwatch and another works well.
Do you use AVG antivirus? If so you will need to create and exception in AVG for Origin and DAI both, disable AVG while you play or, uninstall AVG and use another antivirus like AVAST or BitDefender.
About two weeks ago, and AVG update began causing DAI not to work anymore with Nvidia GPUs. There is a sticky about that at the top of this forum.
