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ive recently built my first mining rig with the following
asrock h81 probtc r2.0
intel 3258
4gb ram
120gb ssd
evga 1000w gold
2x pny NVidia gtx 1050ti
1 gigabyte gtx 1050ti
1 evga 1050ti

windows 10 build 1703

when I initially set it up it would only read one gpu, after doing the hackflags registry edit and increasing virtual memory to 16000 and going back to windows 1703 from 1709 I got it to read all 4  but gives me a code 12 on one
 
https://imgur.com/a/I90d0

I emailed asrock and they sent me a bios update for 1.3b which enabled 4g decoding and it didn't help. ive disabled sound, lan and onboard video from bios, set pci speed to gen1 and still get a lack of resources. shit, ive even gone as far as order another set of risers, another mobo, and a new ssd thinking that somehow that would fix it. the only thing I can think of now is I read somewhere that the cpu might be the culprit. Idk man, Ive been working on this for over a week and am at the end of my rope. any advice is appreciated!

Will reward .0014 BTC for correct solution!

Hello,
Maybe You can get some help from here https://bitcointalk.org/index.php?topic=2401059.0;topicseen  :)

Edit:
Oh, sorry! You have already posted on that topic. If nothing else works, You should RMA your MOBO.

its my second mobo lol when I had 2 cards connected it only let me run one, then with 3 it said code 12 on the third, now with 4 itll let me run three but code 12 on the 4th

bump

I'll bet you a whole Satoshi it is the risers.
One thing that you can do though is test with Linux and when you find the same thing just fine out which riser is damaged and swap.

I went through 12 different risers and all were good. I don't think it's a hardware as much as it's a bios/io problem.

I never got this problem so I'm not sure, but you may give a try as following reference:

https://forums.geforce.com/default/topic/470858/code-12/

Ive tried that too.

But thank you for the reply!

How about this one? TOLUD issues and bios settings.

https://bitcointalk.org/index.php?topic=1768064.0

There's no tolud setting on this motherboards bios, and I already have 4g rendering enabled.

Try setting PCIe link speed in the BIOS to GEN1. (Should that fail, try the other available options with this setting.) My guess is that PCIe lanes is your issue, since your system will likely default to having one card run in x8 mode, and 2 others run in x4 mode, causing problems for the fourth card.


Should that fail...
Clear CMOS (use the jumper or remove the CMOS battery for about 10 seconds)
Reseat CPU
Reseat RAM

Please pm me , i can fix this issue via team-viewer , if you are interested

tried running pcie speed as gen 1, gen 2, and auto, still no resources. just tried clearing cmos, reseating cpu and ram and nothing.
thank you though https://i.imgur.com/3MsQtCw.jpg

I also think, that you have problems with the pci-e lanes config from the mainboard.
You can use a 1 to 4 pci-e hub to use 4 cards in 1 pci-e slot from your mainboard. 8)

Just saying, but a lot of people are having problems with ASRock h81 probtc r2.0. I was also one of them. And it does seem like PCI-E slot issue.

Like R0land said:
 

enable gen1/4g decoding in bios
disable audio, sata ports and everything else what u dont need in bios
try to increase systemagent offset voltage +0.1 - 0.5
increase min/max virtual memory

i had this mobo running with 7 gpus stable

all my gpus show up under pci express except the last one thats under pci to pci bridge but even then that gpu isnt the problem, its the one attached to pci express root 1


https://imgur.com/a/CHdoo

Try uninstalling hd audio controllers, not just deactivating them

everytime I uninstall I wait a few minutes and they come right back

Bounty still up!

Yeah I thought so to so I spammed uninstall on the audiocontrollers on different ports and then on the one I had problem with and then the whole thing seemed to arrange itself in a way that it didnt cause a conflict. Since you have tried everything else (same as me) im still thinking this is your best bet to mess around there.

Just in case, im dont think it matters, im running 4g decoding enabled, but gen2 pcie link (most recommend gen1). Also,  im sure you have your monitor connected to the correct pcislot (16x) but that is a problem I started with... couldnt get the cards to install the right way for the life of me before I got that out the way  :-[

Anyways I hope you figure it out, I know how frustrating it is.

boot with one gpu... verify it works.

shutdown, reboot and confirm.

now, add one gpu.

let it get to the point where both are detected again.  test.

reboot and confirm.... and keep adding one more gpu like this.


sometimes windows gets wonky and needs to be walked step by step.....

You have one of two problems, I think. (Or maybe both.)

• Your 1000W PSU may be underpowered for this configuration.
• Two or more cards are trying to access the same memory.

The process to correct it is to unplug everything but one GPU. Boot. See if you avoid this problem.

Continue adding one card at a time until you get a conflict. 9 times out of 10 it's the Interrupt Request (IRQ) number that's assigned to two card, but it can also be DMA and I/O. Look for a conflict in Windows Device Manager. Look at the resources for each card. All should be unique and not overlap. (Write a little grid to track it.) If the IRQ or another param repeats, set it to a different address and reboot.

If you find that you can add any three cards but never four (or whatever) without the error, then you could be unintentionally undervolting your cards. Moving up to a 1200w PSU would probably fix that.

Good luck!

everything is good with gpu 1-3 then as soon as I add a 4, one will go code 12 on me and its not even necessarily the 4th one I plugged in

in the memory part it shows 6of my graphic cards. could that be the problem, and if so how do I fix it
https://imgur.com/a/DeOjt

Your PCI Express root port #3 seems to be your problem. It's overlapping resources for 3 of your 1050 ti cards and your HD Audio Controller (00000000A0000000 - 00000000B30FFFFF). First, update the drivers to the latest and see if that corrects the problem on its own. If not, manually assign it another memory page from Windows Device Manager that doesn't overlap any of your other devices.

the audio should be disabled afaik......  its an unnecessary system resource in my book when it comes to miners.

I have the same mobo, i had the same error on windows 10. 4x 1070ti connected to the mobo windows only could use 3 of them, I found a makeshift bios from asrock for 4g option. It did not fix it either. The only fix I could find is just ditching the windows all together and install linux. I have all GPUs working now. For testing I also added another card it can use 5x GPUs without problem.

Agree. There's a LOT to like about converting to a headless Linux build. Windows has its strengths, but to me, a simple miner that requires no license or automatic updates and restarts itself mining again every time it reboots is a joy.

was your copy of 10 truly legitimate and fully updated to 17xx?  Because they made system changes in the recent updates to fix multiple GPU issues....

I'll guide you through installing your system on a mining specific OS for a small fee, as I am sure that your problem is windows. Message me if you need so we can discuss this and get you running A.S.A.P.

I would say it's you need more power in the PSU. If you have a second PSU you can use it for one card. When the PSU can not feed all the cards it happens one little thing: there is enough power for all cards so they are seen by the operating system, but not for all the GPU. So the operating system can talk to the graphic cards controller, everything is reported normal, but when it tries to access the gpu it doesn't respond. On linux for example you have a command pcils which displays the PCI items but the opencl command to query the gpus would freeze. You can also switch the cards and you'll see they are working and only the "last" one is not detected.

Make your life easy. Get a 16 gig USB stick, put simple mining os Rx dag fix , boot to it. If everything works than u good. If it doesn't u know u have a hardware issue.