first in game down in the mines i went to the menu an turned on fullscreen mode.then my minecraft crashed and now it wont let me play every time i open it it pops up and closes.

Put the summary of the bug you're having here

What I expected to happen was...:
was for it to become fullscreen

What actually happened was...:
minecraft crashed and wouldnt let me back on

Steps to Reproduce:
1. go to menu
2. click full screen mode
3. then it will close