Upgrade my rig

Hi guys.

I upgraded my rig. I add 3 rtx 3060 ti. I'm on hiveos. It works perfectly with 2 rtx 2060 and 2 3060ti. But when I want to add my last two 3060 I have no video display on the screen. And nothing happens. I have an 850w power supply and a 650w power supply. Poorly distributed power? Not enough power?

An idea ?

Thanks