Post
Topic
Board Mining (Altcoins)
Re: ASRock H81 Pro will not accept more than 2 GPU's (Code 12)
by
djtappage
on 09/12/2017, 14:35:22 UTC
Hi Guys, having same issues over here with this

only purchased all hardware last week and still havn't got to the bottom of this issue. Tried multiple fixes so any suggestions i would gratefully appreciate it in advance

My Hardware setup is as follows:
asrok h81 Pro BTC r2.0
Intel g3220
4gb ddr3
windows 10 1709 build
Latest bios Flashed via internet
4 pins are connected both sides on board
3x Nvidia gtx 1050ti's - firmware 388.43 (drivers)
3x gpu risers (https://www.amazon.co.uk/Ptsaying-Powered-Riser-Adapter-Extension/dp/B073F1QHZ5/ref=sr_1_1?ie=UTF8&qid=1512829644&sr=8-1&keywords=gpu+risers)

My issue is code 12 in device manager. I have managed to get 2 cards working at the same time but never 3. They are registering there connected however the third card will always show code 12.
https://ibb.co/kDp2Zb

heres what ive tried so far,
tried older drivers for graphics card
ive tried removing cards individually to determine if the riser's are faulty - which there not and nor are the cards
tries the suggested methods of modifying the bios i.e setting to gen 1 gen 2, None of which seem to make any difference also disabled hd audio
Tried increasing page file.
Tried adjusting registry with HackFlags method.
tried installing ubuntu however i couldnt get this to recognize 1 card let alone 2 or three. (im not a fan of ubuntu) so i gave up with this but i want it to work on windows anyway.
tried following the https://forums.geforce.com/default/topic/470858/code-12/   - however my 3rd card doesn't show on the lists
tried DDU to remove drivers and starting again (45 restarts and counting)


Ive done a few more things but im starting to run out of ideas

one question i do have - does physical RAM effect the amount of resources that can be allocated for a gpu? - bascially is 4gb ddr3 enough to run 3 gpu's? or should this not matter

Im sure its the later but i feel like im missing something really obvious here

George