CRASH HELP!!!!

Put the summary of the bug you're having here

*What I expected to happen was it would open peacefully but it said it crashed

*What actually happened was it just crashed i think my dad updated the computer sooooooo..................BUT STILL

Steps to Reproduce:
1.WELL I DONT KNOW IT JUST HAPPENED
2.Plz reply i need 2 know how to fix it i LOVE MC
3.Plz also reply if u had this bug to i wanna know if its common
4.REPLY PLZ I NEED HELP
also i couldnt log in with a succesful appearence so help!