Not quite sure how to describe it, but when I start the game normally through the Launcher, it goes into full screen mode, but remains a black screen. I tried verifying all files, running safe mode, and letting it 'load' for about 20 minutes. It doesn't lock up my system at all, I can use other programs while this is happening. It also worked fine about 6 hours ago. The system was idling once I logged out then, and now that I came back it won't run.
I've also run all Anti-Virus/Malware Software I have, to no avail.