All lights red-Says no drives detected

Two year old 5D stopped working today. It wasn’t having any problems this morning but I noticed all the lights had gone red and dashboard says “No drives detected”. I shut it down, reseated the drives (which seems silly) but upon rebooting I get the same condition. All red, error from the dashboard.

What do I do now?

Just to add, it says no drives detected but on the status screen it shows all 5 drives. Clicking on each individual drives shows “Good” but the "system information shows Critical.

I’ve reseated the drives twice now. All lights still red.