Ok so i log on to minecraft and get on. But when i get on a server or singleplayer world it crashes

Put the summary of the bug you're having here

What I expected to happen was...:
I would join on the server or single player world and play

What actually happened was...:
It crashed every time I got on a server or single player world

Steps to Reproduce:
1. Don't know
2. ...
3. ...