minecraft is not opening and keeps crashing

Put the summary of the bug you're having here
(games has crashed)
What I expected to happen was...:
Describe what you thought should happen here
minecraft would run smoothly
What actually happened was...:
Describe what happened here
i open and close the game it still crash
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...