Minecraft crashes after 30 secords

When ever i try to start Minecraft it works for like 30 seconds before it crashes and after that there is no crash report. When ever it crashes something small pops up very fast and then the game crashes. I've tried to re-install Minecraft many times but nothing has changed. I've even tried older versions of Java and still nothing.
It does the same thing if you wait the same amount of time in main menu.