WoW is broken D:

OK, so i open the game and i get to the login screen but all my textures are all over the place. My screen is a jumble of striped and checkered rainbow coloured boxes everywhere. I have uninstalled, deleted the program, wiped it completely from my computer, then re-installed and all that good stuff and same thing. Turned my computer on and off, same thing. Even IF i get a chance to somehow login, everything is still really messed up, and i cant see my toons gear or anything. This problem only arose after the new patch. If anybody has any idea on what the heck the problem is PLEASE help me out.