Hi! Im new at eos and i want to install nvidia driver and i followed this https://discovery.endeavouros.com/nvidia/nvidia-installer/2021/03/ and after i reboot, i got stuck, sorry for my bad English! 
Welcome & Hello @KevinPalowa
Are you able to boot on the live ISO and post the link from this command.
inxi -Faz --no-host | eos-sendlog
Edit: Was it working before you tried to install the Nvidia drivers?
it solve, i think i installed wrong driver and i tried install with this command sudo nvidia-installer-dkms -b and all work normally again!
This is installing with bumblebee. Could you just provide the link to the command just to confirm your hardware. If it’s working that’s good.