Windows version 8.1

Put the summary of the bug you're having here

What I expected to happen was...:
i opened the minecraft launcher and pressed the play button so i could start to play

What actually happened was...:
i opened the minecraft launcher and pressed the play button and it just ceaps crashing im not eaven getting in to the Singleplayer/multiplayer menu before it crashes.

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