WOW not Launching! Please Help!

When i try to launch wow through wow.exe, nothing launches, i can see the process in the task manager, world of Warcraft retail, but nothing starts, i tried running as admin, and deleting, WTF and Cache. Nothing worked so far. Nothing launches. Any way to fix this? (MOP 5.4)
Thanks
Edit: Grammar

I'd hate to ask, BUUUUT did you try reinstalling?

And also, maybe obvious, but did you try rebooting your computer?

Do you get a specific error code when your launcher quits? If so, checkout our thread on error codes