My minecraft does not open!

My minecraft does not open! I open the launcher, click on play (already tried to change version, play without optifine, play snapshots) it loads quickly and seconds later the launcher closes. I've read other people with the same problem. Maybe it has something to do with java (which for information I updated recently). But I really do not know what to do, I really want to play, and I'm not getting it. I hope you help me, thank you.

(I'm Brazilian and I'm writing this with the help of google translate, if English is kind of weird, sorry )