There are 2 possiblities.
1.1 start MSI afterburner and overclock your GPU.
1.2 Start Arma 3
1.3 Wait till the advertisements are done. The screen will now black out, you can do nothing except for ctrl+alt+del out and stop the process. Somtimes after 10 mins of waiting it will give a blue screen of death
2.1 Start Arma 3.
2.2 Start MSI afterburner and overclock your GPU
2.3 The moment you maximize Arma 3, it will flash for a second and then change to a black screen, giving the same problems as above