Minecraft Crash

Well, I sent the other thread, but as I spent more than 1 week without answers, I decided to send another one ... My minecraft is bugged and I can not log in, the game only stays on the game start screen, and nothing happens, I open minecraft normal, I put email and password, and when I go to start the game crash and back to the same screen ... I tried to reinstall, change the version of java to the most current one, change the .minecraft folder, but none of that advanced, so reopen this error for more information about not being able to log in.
Ps: in my .minecraft folder, there is no Crash Reports, because I can not even start the game so Crash can appear