I have a new RPi 4 and I have installed NOOBS from a zip due to the fact that I cannot install software on my computer as it is loaned from my school (i.e. image writing software)
However, once plugged in to a power source, there is just a singular red light and the green light flashes once really quickly.
I read an article online (https://www.makeuseof.com/tag/raspberry-pi-wont-boot-fix/) which said that if the OS was not supported there would only be a red light and no green light, so I wondered if there was any way to install the latest RPi OS version from a zip file rather than an image?
(I tested my download of NOOBS on a RPi Model B [https://socialcompare.com/en/review/raspberry-pi-model-b] and it worked)