wont let me play minecraft at ALL not even singleplayer take me to home screen the i click a world the it crashes.

Put the summary of the bug you're having here

What I expected to happen was...:
play minecraft single and multiplayer.
What actually happened was...:
Crashes my game on all versions

Steps to Reproduce:
1. Log on
2. click singleplayer
3. click on any world
4. it will crash and sent a crash report