Why is my graphic card not taking drivers after giving display?

Hello I have an AMD Powercolour Red dragon AMD RX 570 4GB Card. I accidentally flashed the bios or flash drivers of my card I don't know. My card stopped giving display and my monitor went black. I took it to bios repair shop. They changed the bios physically and my card started giving display again.but it doesn't pick it's drivers. When I install the drivers. The setup of drivers or card gives error that cannot find writing.please help me.