amd radeon r7 200

HI, where can I found kext for amd radeon r7 200 series? Because when I turn on my Hackintosh HIGH SIERRA with the graphic card amd radeon r7 200 series I can't see anything; only black screen. thx for the help. following there's my configuration: CPU: Intel i7-4790 MB: Asus H87M-E SSD: Samsung...

Hi All, I have managed to install Mavericks and get it to boot and run fine...except I have one issue. My graphics are stuck in low res. Does anyone know where I can find a driver or kext to make it run hi-res as all AMD drivers are windows only it seems. Thanks!