In this case nothing happens until i press "power on" button, than again everything is instant on and rig starts to boot up.
Yes, I know, but until you press "power button" does this white leds shines or they are turned off? Thank you.
I had to switch to gen 2 in bios for all my GPUs to be seen in win 10 did you try this just google gen 2 setting for your motherboard if you cant find the setting
Yes, I tried all three options, Gen1, Gen2, Auto, but there is no any change. Thank you, FFI2013.
Uninstall the amd drivers with ddu in save mode and reboot.
Then Windows automatically installs the Microsoft standart display drivers.
If you can see the card in the device manager now, you can use AtiFlash to flash a new BIOS ... maybe it´s a problem with the BIOS
Good luck !
Yes, I tried to ddu drivers, both, from safe mode and normal mode, but there is no difference, same result GPU on riser is not recognized but if same card put on x16 port directly everything works fine (as you sad, Windows installs Microsoft Standard Display Drivers).
I also tried to flash BIOS of both GPUs (TOP and OC) back to original and than to put them on risers, but without success, only the GPU put directly in x16 slot is regularly shown in device manager.
Thank you all, for your suggestions. I am going to try x16 slot "doubler"
http://http[Suspicious link removed]lec.com/eerxb16.jpg because both GPUs works well directly on pci-e x16 slot. Or I will try to sell one of them (TOP or OC) and buy any other vendor RX580.
If someone have any other suggestion, I would like to conclude what is happening here.
