So, I was doing an installation of Raspbian without a monitor or keyboard, as outlined here and I was at the stage where you insert the sd card with some changed configuration files and wait for it to install. However, during this process I have accidentally pressed on the card and it removed from its slot. I put it back in, but now the only light flashing is red, I guess it is the power light. What should I do now? Will I need to somehow reboot the installation?
Update: following recommendations, I have tried powering it off, reinserting the sd card and powering it on again. Still nothing. When I plugged the sd card into my main computer it had 2 partitions, one called BOOT, I guess the installation started before I interrupted it. I have formatted the sd card and put NOOBS on it. After inserting the card back into rpi the green light flashes for a bit and then nothing happens.