ASRock H81 Pro will not accept more than 2 GPU's (Code 12)

[haggyy]

I am in the EXACTLY same boat as you man, I am also stumped. I have 3 GTX 1060's in my mining rig but the OS only recognizes 2 and hates the 3rd no matter which order they're in. I am also using the same ASRock motherboard and similar other hardware to you.

I am going to try that fix that q43a0ef061ej has pointed out and I will also report back ASAP.

[haggyy]

Right guys I've just tried editing the registry however I seem to be getting the same problem, just in case I am doing something completely wrong is someone able to kindly take a quick look at the screen shot and check that the value is correct. Etc.

After creating the registry key, I've rebooted and gone back into device manager, here are the results:

http://i66.tinypic.com/k1v0qt.png

Thanks

[q43a0ef061ej]

hi, haggyy

Right guys I've just tried editing the registry however I seem to be getting the same problem, just in case I am doing something completely wrong is someone able to kindly take a quick look at the screen shot and check that the value is correct. Etc.

After creating the registry key, I've rebooted and gone back into device manager, here are the results:

http://i66.tinypic.com/k1v0qt.png

Thanks

Your editing is okay.

Also, you need to try disabling "some IRQ consuming devices".
(e.g. Disable iGPU in BIOS settings, right click and disable on HDMI audio on video card in device manager, etc)

update:
Sorry. It seems to be a problem of memory mapping, not IRQ. but, disabling "some unnecessary PCIE devices" is valid.

ty

[simpie10]

I have the same problem but no fix yet.
Setup: asrock h81 pro btc mobo, 3 x gtx 1070, 4gb ram, cpu intel G1820

I tried hackflags, gen1, gen2 everything with a fresh w10 (1709) installation. But 1 of my 3 cards still have code 12.

Any tips left i can try? Im out of options

[Rustmas]

I am in the EXACTLY same boat as you man, I am also stumped. I have 3 GTX 1060's in my mining rig but the OS only recognizes 2 and hates the 3rd no matter which order they're in. I am also using the same ASRock motherboard and similar other hardware to you.

I am going to try that fix that q43a0ef061ej has pointed out and I will also report back ASAP.

Maybe you change the PCIE to generation 1?

[m_01]

Can you provide complete system hardware configs?

[q43a0ef061ej]

hi, simpie10.

This thread might help you.
https://bitcointalk.org/index.php?topic=2307023.0;all

When the rig has less main memory,
In order to access too many PCIE devices, allocation to the IO memory map may not be enough.

You can try disabling "some unnecessary PCIE devices" (like HDMI audio on a video card) in device manager.

ty

[Yoledo]

hi, guys.

I have same trouble. but this method can remove it in my case.

make new key "HackFlags" as (DWORD 32) set value 0x600 as (Hex) in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\PnP\Pci\

and reboot.

ty

Well I'll be dammed! You sir are a genius! 

All three GPU's running perfectly error free.

Just for my nerd interest what is the HackFlags doing here?

I have the same exact set up and same exact issue . Can you please tell me what the hackflags is ? I tried searching it and found nothing

[q43a0ef061ej]

hi, Yoledo

This is a source information about "HackFlags".
https://support.microsoft.com/en-us/help/942959/error-message-when-you-attach-a-pci-express-expansion-chassis-to-a-com

Besides,
You also should care TOLUD(Top Of Lower Usable Dram) problem, when your rig has less main memories.
This problem occur due to insufficient memory address space for accessing PCIE devices.

You can try reduce TOLUD value in BIOS menus ("Auto" does not help you), If there is such item. or
You can try disabling "some unnecessary PCIE devices (like HDMI audio on video cards)" in device manager.

And also if your MOBO has Buggy PCIE 3.0 (Gen3),
This method may help you.
check it.
https://www.nicehash.com/news/128

[Yoledo]

hi, Yoledo

This is a source information about "HackFlags".
https://support.microsoft.com/en-us/help/942959/error-message-when-you-attach-a-pci-express-expansion-chassis-to-a-com

Besides,
You also should care TOLUD(Top Of Lower Usable Dram) problem, when your rig has less main memories.
This problem occur due to insufficient memory address space for accessing PCIE devices.

You can try reduce TOLUD value in BIOS menus ("Auto" does not help you), If there is such item. or
You can try disabling "some unnecessary PCIE devices (like HDMI audio on video cards)" in device manager.

Thanks for.the reply! I'll see if there's an option for tolud values in my bios as I can't recall there being an option for that .I tried the registry edit last night and set it to 600 and now it won't boot into windows at all, just freezes. I'm gonna install a fresh copy of windows and start over

[q43a0ef061ej]

hi, Yoledo.

oh, Editing the registry at your own risk..
..Did you enter it with DEC?
Plz care, The flag value must be on HEX, not DEC.

By the way,
if your MOBO is ASRock H81 BTC Pro R2.0,
Unfortunately, It have no TOLUD option. (TOLUD is fixed to "Auto")
but, You can try secondly method. (Disabling some unnecessary PCIE devices)

I wish you good luck.

[simpie10]

I contacted Asrock support.

They say for some HackFlags solution works on Windows Installations (1709).
But it didnt work for me.

The solution for me was windows 10 (1703), the version before creators update.
My 4 cards (Gtx 1070s) are working with this Windows version, when i update to 1709 only 3 cards are working. So i dont update for now.

The support said its a problem which occur on Windows 10 (1709) versions. So microsoft needs to fix this in a coming update.

Hope it helps, cioa.

[Yoledo]

I contacted Asrock support.

They say for some HackFlags solution works on Windows Installations (1709).
But it didnt work for me.

The solution for me was windows 10 (1703), the version before creators update.
My 4 cards (Gtx 1070s) are working with this Windows version, when i update to 1709 only 3 cards are working. So i dont update for now.

The support said its a problem which occur on Windows 10 (1709) versions. So microsoft needs to fix this in a coming update.

Hope it helps, cioa.

windows 1703 helped me get 3 out of 4 cards up now I'm just getting code 12 not enough resources
https://imgur.com/a/I90d0

[simpie10]

Have you set your virtual memory?

Read this source at step 6. http://www.cryptobadger.com/2017/04/build-ethereum-mining-rig-windows/
I have set that before i installed nvidia drivers.

But  i also installed my 1703 fresh without internet connection. Have you tried that out? Maybe windows updates still set things up.

[Yoledo]

Have you set your virtual memory?

Read this source at step 6. http://www.cryptobadger.com/2017/04/build-ethereum-mining-rig-windows/
I have set that before i installed nvidia drivers.

But  i also installed my 1703 fresh without internet connection. Have you tried that out? Maybe windows updates still set things up.

https://imgur.com/a/cmmus

https://i.imgur.com/Ft4vaFT.jpg

still suckin

[simpie10]

Strange, reinstall windows again maybe? without internet connection u could try.

[Yoledo]

Strange, reinstall windows again maybe? without internet connection u could try.

I'm on my like tenth install lol man this is frustrating. could it be that I went too cheap with the cpu?

[simpie10]

I know. Its really frustrating. Try contacting support (asrock)?. U have a different card then mine, maybe another solution will be suggested?

[Yoledo]

they sent me a copy of the 1.3beta bio which enabled 4g rendering but it did squat on my code 12 issue

[Miner3000]

Following this thread since i got the same problem after updating Windows. For while I could only get 4/6 gpus working (code12) on the others but trying all possible fixes got me to 5/6. Now done wasting time finding a solution, 6/6 cards worked before win update....

Hopefully someone solves this, I maxed out my technical potential on this one...