The Minecraft Launcher doesn't want to launch (as it is it's primary task...)

Here is my problem.

 

I wanted to play Minecraft like everyday but today , Minecraft Native Launcher has done twice time a update... The first one was working , but the second one just display a white sceen , no "loading" screen appears. It absolutely doesn't crash! Wait until the screen turn back is useless... I've wait aproximately 1 hour and nothing, restart my computer twice time and nothing... I hope that I'm not alone to have this problem to be fixed quickly.

 

Thanks to read my post.

 

                                                   Varonex