RX 570, 580 no signal to monitor :S

[tkay819]

Been using the following spec and system for around 5 years now:
i5 3570k
16gb DDR3 ram
500w psu
(gigabyte ga-z77x-d3h motherboard)
EVGA GTX 960 2gb

Short story:
I was replacing my gtx 960 to the one I got from a friend which is RX 570 4gb reference model, that was from his Dell inspiron tower (used for 1 year).
I also have RX 580 4gb that I bought from Ebay.

Desktop turns on with fans spinning and LED lights on mouse and keyboard, but no signal on monitor
tried Hdmi to Dvi-d cable, no signal. Tried different monitor with hdmi to hdmi..no signal.
Things Ive tried is CMOS, Reseat rams, diff PCIE slot

Update:
so, here is what bios looks like
using my old GTX 960 and looking at Bios

IMG-0647

Image IMG-0647 hosted in ImgBB

ibb.co

IMG-0648

Image IMG-0648 hosted in ImgBB

ibb.co

Window is installed on Legacy

Screenshot-14

Image Screenshot-14 hosted in ImgBB

ibb.co

I have a feeling that its about bios..but idk what to touch and try. HELPS!!

 

[Regeneration]

Make sure your motherboard's BIOS is updated.

Try to play around with the legacy/UEFI/CSM settings.

Try the card(s) in another slot and system.

 

[boomshiva]

Hey -

Any chance you can extract and post the vbios for the reference 570 here? I bricked mine without first extracting a copy (I know, I know), and can't find that exact reference vbios anywhere, not even in the 'downloads' section.

A little help, please?