Recovering from failed graphics driver installations
From Ark Linux Wiki
If you need to reset your graphics card and Ark configuration or simply need to login or access the command line:
- To get to the command line, on GRUB screen, press 'e'
- Choose the line starting with "kernel", press 'e' again, and append a space and the number 3 at the end
- At the command line, log in as arklinux, then run "su -" (that's su [space] - without quotes), then "init-rescue x" (that's init-rescue [space] x without quotes)