GPUs showing 0 mhz core/memory

[christiano88]

Hello,

I just recently built my first miner, only put 2 RX 470 ref sapphire cards on a H81 Pro BTC, and installed win10 64bit + amd drivers 16.9.1 (the first driver made by amd that don't require driver verification, because I plan to mod the cards). The thing is, the cards show in device manager, it says they are working properly, NO errors (error 43 for example, which is common), they show in GPU-Z, but when I check the clocks, it shows 0 Mhz on core/memory for both. I am using the integrated gfx to display image, and I haven't made any modifications in BIOS.
I don't think mining would work if they show 0 mhz.

Please help!

Thanks.

[1715295703]

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[1715295703]

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[1715295703]

1715295703

[christiano88]

Nobody able to help?
I have tried some troubleshooting, removed one card, kept only one, and without riser. I've put it directly in the pciex 16x slot. When I set the display to use onboard, the RX470 is showing 0mhz, Crimson doesn't wanna open up. Wth is going on?

[xhomerx10]

When you disabled the onboard graphics, did you get a post error?  Did your display remain blank?

[lbr]

set the display to use onboard

Don't.

Or use display dummy plugged into one of the AMD cards. I've used this - http://www.ebay.co.uk/itm/1080P-HDMI-Male-Input-to-VGA-Audio-Output-Cable-Converter-Adapter-Gayly-/391079748938?hash=item5b0e2b654a
and this - http://www.ebay.co.uk/itm/HDMI-dummy-plug-4K-DDC-EDID-emulator-fake-display-headless-digital-slim-/161265341755?hash=item258c29d53b:g:A8EAAOSw5ZBWOAFb
Also in some BIOS-es there are settings dealing with not connected GPUs.

[christiano88]

Indeed, it seems that setting to use onboard created this issue, if I use the display on one of the cards, they all work properly. Today I'm getting 3 more cards so I will be able to do to some testing.

Thank you!