Already tried before to make posts, I make multiple research before to make it. And that's not work. Please do not judge before and read each lines of my post 
adaseb didn't judge you, he simply said that "He forgot the link and he didn't have the time to look for it again, just search it yourself using the keyword in his reply".Anyways, here, I've done what he instructed which brought me to this link: bricked-your-rx-480-due-to-bad-flash
Different models, same brands but both have the same Bios chip.
The Bios chip that you're asking where was included in the instruction as well.
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It's the one on the bottom right screw with the 8 pins.
If re-flashing didn't help, the problem might be something else.