The game does not open

 
 
I just bought the game and I can not open it, only the launcher opens, but when you play it does nothing. In the task manager I see that two processes are generated that are called: Minecraft launcher and Minecraft launcher (32 bits). and sometimes only 32-bit appears twice. At the end of the process the game opens. My computer is 64 bits and I don't know why a 32 launcher is generated.