it keeps on crashing when i try to open up minecraft

Put the summary of the bug you're having here

What I expected to happen was...: to load and i can play
Describe what you thought should happen here it should work

*What actually happened was...:*it crashed
Describe what happened here chrashed

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...