Nvidia RTX 3070 into a Precision 7920

Hey everyone,

I recently bought a RTX 3070 GPU and tried installing it into my Precision 7920 Tower. Hooked up the PSU cables correctly etc. I'm gettin the blinking power light error when i try to start up that states:

PCIe Add-in Card population issue

• PCI device is installed on CPU1 slot and CPU1 is not installed.
• f you can assist to troubleshoot, move all PCIe card in CPU1 slot to CPU0 slot. An alternative would be install an identical CPU as CPU0 to CPU1 socket.

There was already a graphics card in there, so i know the slot i'm using is the correct one (but i tried all the others, just in case).

Does the Inspiron Precision 7920 not support a RTX 3070?

Thanks