On startup, no version of minecraft will run, my game is not modded

Put the summary of the bug you're having here

The game to start up as normal.
I just wanted to play minecraft, and it will not run.

All versions of the game crashed.
I clicked play under my 1.6.4 profile, and the window goes black, then i get a crash report.

1. Open Minecraft launcher.
2. Click play, for any version.