Question No Signal After Buying an RX 570

Feb 19, 2019
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hi , I had bought an rx 570 With one dvi port coz it was 99 in Amazon but when I did install it it says no signal but when plug the cable in MB it works
I did disable the IGPU
I did remove the CMOS
but I have Nvidia drivers from my old gtx 970 is it possible to be the reason ?
and I gave him to a pc place and he said the gpu is not worked and I am going to return it to Amazon but I wanted to ask maybe I can get an answer