First i start up my minecraft launcher then i press play and then i wait about 5-6 seconds and then it crashes so i would appreciate if you could help me.

My minecraft keeps crashing before it gets to the mojang sign and i don't know what to do i would love it if you could help me

What I expected to happen was...:
to go to the mojang sign and then start minecraft so i could play

What actually happened was...:
that it crashed before it showed the mojang sign

Steps to Reproduce:
1. Run the minecraft launcher
2. press play
3. and then it crashes right away