I tried to launch my minecraft and it launches but crashes 2 seconds later

Put the summary of the bug you're having here

What I expected to happen was...
Describe what you thought should happen here
I opened my minecraft after having had to restart it and It should have opened
What actually happened was...:
Describe what happened here
I opened the launcher and started the game and It crashed and wont open

Steps to Reproduce:
1. have minecraft stop working or just close it
2. open minecraft again
3. and try to start it