Stuck at the booting gof blackarch linux

[JunaithSM]

I did sudo pacman -Syyu
When I reboot it not booting..
The usb booting both normal and grup2 is not working.
I am searching for solutions like for 3hrs
I can just use the power button to shutdown.. tty is not opening.
I am just stuck.
I cannot do anything from here no key is working any help.

[svartkanin]

I'd suggest raising an issue instead of discussion and provide a log file