Hi shad0wt1tan,

Which brand of 1070s and MB? I think I will need to sell one of mine 580s because I can't pair it with any other via risers.

Yes, I know, but until you press "power button" does this white leds shines or they are turned off? Thank you.


Yes, I tried all three options, Gen1, Gen2, Auto, but there is no any change. Thank you, FFI2013.


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"

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.

Hi hagbase,

Yes, I know for that option in BIOS. Thank you, for information you have provided. I will understand if you are bored with my questions and don't want to answer on one more.

May you try to turn off that option and see if that leds are turned on, while you switch on your PSU, but do not turn on the rig?

Hi hagbase,

Thank you for your help. I already tried to: disable "Render Stand By", Change Primary GPU to PCI Express and disable Onboard audio, but nothing happens, still the same problem, GPUs not recognized in Windows while connected over powered risers.

Also, I tried not to use 4-pin molex's on MB, still the same, as well as to remove power connector from riser (at this point, GPU not even spin coolers and light is completely turned off).

When you said "instant", you thought at the moment you turn PSU switch on or at the moment you power the rig on? By the way, nice setup.

Hi hagbase,

Thank you for reply. Do you have Asus Strix RX580 8GB in your rig? Did you connect them on MB via power risers? When the rig is powered off, do you see white led turned on, near 8-pin GPU power connector?

Thank you for reply, but I tried that many times and nothing has changed.

When I turn off my rig, I see white led diode, turned on, near 8-pin power connector on my Asus Strix RX580 T8G (while directly on mobo 16x slot), but led is turned off, while connected via riser cable.

I think that is the source of the problem, GPU needs power before rig is powered on, to be detected by mobo's BIOS. Can someone confirm this?

I saw the another user on other forum have/had the same problem, with same card on different mobo.

Do someone saw this kind of problem, elsewhere? I can't send mobo back to AsRock because it detects all other cards except RX580 series or maybe only Asus Strix line of RX580 series.

Hi,

I have a problem with Asus RX580 (TOP and OC) 8GB GPUs not showing up in Device Manager (Windows 10) and/or AtiFlash (-ai command), when attached to motherboard (AsRock H81 Pro BTC R2.0) via powered risers (ver006c, ver007s, ver008s). When I attach each card (TOP or OC) directly into PCI-E x16 slot, it shows up and works well. All risers are tested with PowerColor RX480 8GB on the same motherboard on each of x1 slots and everything works very well.

Have anyone had similar problems with these GPUs?

Thank you.