My game is broken

[SORRROW]

Hello, I've been playing since open beta 3 and no problem so far, but since yesterday my game is simply weird.
Once in game, all text boxes are empty, there is glitch everywhere, I basically can't play, I tried to reinstall the game but it did not change a thing, bug is still there and I honeslty don't know what to do.

http://imageshack.us/photo/my-images/708/t1ha.png/

I have done everything you could think of, I reinstalled the game, updated my drivers, restarted my computer but nothing works.
Also, if I desactivate the nameplate, the bug goes off completly... So this is entirely nameplate related.