Update - then boot to black screen

I made the update, and now it boots to a black screen. I can’t do anything.
What should I do?

Can you switch to console: Ctrl+Alt+F2 ?

Where, at the black screen? No.
At boot it lead me to the boot menu (I dual boot for windows). I would show you an image, but the site doesn’t allow me to use multimedia.
If I press manjaro Linux , it goes to black screen and never shows enything.
At the boot menu I can press C to go to the GRUB command line, if that is useful.

Can you chroot into the system by susing the Manjaro USB stick ?