I was trying to use WSL, so i enabled it & virtualization's setting in control panel>windows feature on/off restarted pc, opened Ubuntu 18.04 in administrative mode. The CLI opened but did't show me anything, i waited for more than 30min 
but nothing happened,
It was showing black screen.Then this window got closed after pressingEnter
I did't understand what's the problem. and how to fix it. I searched it on youtube, but no one had encountered this problem.