Which OS version is on the micro SD card? Can you confirm that the card is fully inserted (you’ll feel/hear a small click) and then apply power to the Organelle S2?
I was asking to determine if you had recently reflashed the OS on the SD card.
Assuming you are providing the correct power, a steady blue light would indicate that the Organelle is not booting completely. If you have a spare SD card, you could try flashing it with the OS. Instructions are here:
You could also reflash the existing card, but that would erase everything on it.