Corsair One Pro - shut down and won't boot again...

Ok so, I've just bought a brand new Corsair One Pro this friday, been working on it (developing a game) today from 7am to 11pm and it just shut down for no reason, no weird noise / high temp (at least that I know of, it's not like I check the temperature every 5 minutes).

Anyway, I've tried to reboot it, the red lights on the back switch on for like 1 second and it instantly turns off... after a 2 seconds pause, it tries to boot again... and shuts down again. Infinite loop.

I have disconnected the power cable (just in case) and waited for about 15 minutes. Who knows, it might get better after cooling down ?

Now when I turn it on, the red lights on the back switch on too but nothing is working at all (USB ports don't seem to work : mouse and keyboard have no lights - HDMI ones don't work too : the screens stay turned off).

So far : 2500€ for a computer that lasted 1 day.

And it's not like I've been pushing it very high temperature-wise, it was just a work day. What's wrong with this computer ?

Any idea where it might come from ? How could it be fixed ?

Should I contact my retailer or use the warranty from Corsair ?

I thought spending so much on something that "looked" professional would at least make me avoid issues like that for years... I guess it's the last time I'll buy a all-in-one setup instead of assembling it by myself.

Edit : I have submitted a ticket, thanks to someone from the chat at Corsair support.

I entered everything correctly, title/description/hardware/part#/serial#...

It just said "please enter a valid serial number" every time I tried (and retried like 10 times on different browsers). I double/triple/quadruple-checked the serial# and it wouldn't work :D

My part# is CS-9000007-EU and the serial is 12 digits long.

Edit2 : Ticket number is #599116