WoW Won't Start

A few days ago when I went in to log in as normal, I clicked WoW, "Run", and nothing happened. For the last few days I've been trying to figure out why it randomly did that. I've re-downloaded the game, ran as administrator, created shortcuts, used a different downloading torrent. All my other WoW clients work just fine. It's just the 2.4.3 one. It won't do anything when I click play.. Please someone help!

When you start wow from wow.exe does it show up on task manager?

No, literally nothing happens.