Then check 'pacman -Qs nvidia'
Make sure the system is fully up to date:
sudo pacman -Syu
If nvidia installed, remove all nvidia:
sudo pacman -Rdd nvidia-utils nvidia nvidia-next (choose the correct installed from the first command posted here)
make sure intel is installed:
pacman -Qi xf86-video-intel
Then on reboot, in grub, hit "e" to edit, and make sure there is "nomodeset=1", then hit F10 to save and boot.
If it boots to desktop or blackscreen, make sure to run "sudo journalctl -b -p err" again (if blacksrceen, go to tty1 again > Ctrl-Alt-F1).
Just click on the link I posted, fill in any username, and you'll be connected to IRC