New laucher crashing

Ive played alot of minecraft and i enjoy it alot i have played other games for a month or 2 now i come back i launch up Minecraft and it doesnt work it says Preparing then the launcher closes with no minecraft when i try on other versions it says Something cant be downloaded
This also isnt a crash usually this error happend but it said a Not Responding message i clicked Find Solution then it fixed not that doesnt work so i would like a solution please.

-Thanks
Karar