Aurora R7, Warranty void due to upgrade?

Hey guys,

I bought an Aurora R7 last August. In March I upgraded the GPU from a 1050 TI to a 1660TI. Purchased from Amazon and self installed.

Last month my motherboard bricked. Won't turn on. I had a couple of weeks left on warranty so I sent it in.

Now Dell is saying it's out of warranty and that I need to pay ~400 for the motherboard because I changed the GPU. It's pretty clear the GPU did not brick the board. The 1660TI is marketed to be interchangable with the 1050TI. But I didn't get it from Dell so now they won't service the rest of the product?

Isn't Alienware supposed to be for gamers? In what world do gamers not upgrade their GPU?

I tried to make my case and now they are saying well it's out of warranty regardless. Well it wasn't when I sent it in?

The worst part is I financed and I can't afford 400 dollars for a mother board. 

I am heart broken and don't know what I can do. If anything.

Anyone have any ideas?