After pressing launch, black screen flashes then just my desktop

[Mnoco7]

I run windows 8, nvidia 760m graphics, 1920x1080 monitor, whenever I press launch a black screen flashes briefly then my mouse gets frozen in the upper right corner of my screen, no black screen just my desktop as if I didn't launch anything, I tried compability mode...

[jens]

Check the troubleshooting guides and if nothing helps, post the hpl log as described in problem x.