Put the summary of the bug you're having here

What I expected to happen was...:
play minecraft

What actually happened was...:

minecraft's image get freeze and when i open the task manager i see that java and mincraft stop working
when the image freeze i still can hear the music
minecraft doesnt close unless i stop it with the task manager

Steps to Reproduce:
i only open minecraft and it happen when i create a new world or when im playing a few seconds in a server