2 new exact same GPUs, one doesnt work.

Mate_6

Prominent
May 12, 2017
8
0
510
I have 2 ASUS RX470s, as the title says...

I put one in the Pciex16, system boots,I change it to the other one, system doesnt boot,the light on the gpu is blinking rapidly.

At my FIRST use I tried starting my pc with both,one in the pciex16,one in a pciex1-16 riser.
There was a little burning smell I didnt know from where but probably from the gpu thats not working now.

Pcie riser is not the culptrit, I tried it with an older gpu and the system booted.
PSU: Rorsair RM850x


Is it burned now to wreck?
I bought it a few days ago should I send it back,or is it fixable?
 

Mate_6

Prominent
May 12, 2017
8
0
510
MERGED QUESTION
Question from Mate_6 : "Motherboard doesnt boot with more than one GPUs."

mobo has 5 pciex slots,it boots with one GPU hooked up but not with two.
PSU is not the problem.
What could be the case? Upgrade BIOS?Delete CMOS?
Im just guessing here.