Aurora R10, upgrading to Windows 10 Pro

Hey,

My Alienware Aurora R10 came with a preinstalled Windows 10 Home Key that I could not change during reinstallation. Even with the "Upgrade Product Key" option in the windows settings, I can't replace the Windows 10 Home Key that Dell is forcing on me. I tried everything, from a fresh install to removing the key via CMD. I tried two different legit unused Windows 10 Pro keys but nothing works. 

It's very frustrating and reflects bad on Dells policy. This computer was crazy expensive and Dell won't even let me change my Windows license as I please.

DELL LET ME CHANGE MY KEY!