AMD r9 390 incompatible with DX4870 motherboard?

Necropuppy

Reputable
Oct 5, 2015
2
0
4,510
I recently bought a amd r9 390 gpu and new 650w power supply for it but when I start my pc there is not signal and my pc wont boot to bios. My monitor doesnt even recognize that theres a video signal. I tested the card on a friends pc to see if it was good and it ran fine on his pc. Hes running a much newer(not exactly sure) asus republic of gamers motherboard and a 850w corsair power supply. I believe that the issue with my pc is either the power supply or the mother board. Does anyone know if this mother board is incompatible with my new card? Gateway no longer offers support for my model. Any help appreciated.
Thx.