Hi @Eliovp and @ldw-com,

I used rom => http://www.mininghwcomparison.com/RX480-30MhOTB.zip
and atikmdag.sys file. http://www.win-raid.com/file.php?url=http%3A%2F%2Ffiles.homepagemodules.de%2Fb602300%2Ff16t892p30028n2_PQDCGzub.rar&r=1&content=RE%3A_AMD_and_Nvidia_GOP_update_%28No_requests%2C_DIY%29
But my computer doesn't detected graphic cards.

I used window 10 Pro. Ref PowerColor graphic rx480 8GB.
My steps is:
1. disable check and enable testing mode.
2. Restart and copy atikmdag file to system.
3. Restart and mode bios by ATIFlash 2.7.4.
3. Restart and check result.

Result is: bios is modded but graphic cards and radeon settings don't work.

Please help me.

+1

I have PowerColor.

for Windows stopped this device because it has reported problems . (Code 43 )

I returned to https://www.techpowerup.com/vgabios/184327/amd-rx480-8192-160603 and work