Put the summary of the bug you're having here

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

What actually happened was...:
Minecraft never run correctly. I just bought it yesterday but only had the possibility of trying the demo mode. Even the demo mode crashed after one hour.
Today, I tried again but the demo mode crashed immediately.
See the attached file of crash report.

Describe what happened here

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