Hey guys,
im new in this forum - i checked the searchfunction but cant find something, that helped...

a few hours ago i install Kali on my notebook (Thinkpad 220t i7 8GB RAM). After the "graphical installation" i start a "apt-get update && apt-get dist-upgrade" - after a few minutes there come a "Something went wrong - User logged out". Okay, so i logged in and i got a BlackScreen and my cursor was a Black Cross... so i think the graphic is crashed and i reboot my computer.

After the reboot i get the message: unable to mount root fs on unknown-block (0,0) and cant do anything. I cant start the terminal via bootloader... whats goin on?

Thanks for help guys!