Noob in dire need of help with rig setup

[Kritix]

Hello guys, i have recently started mining ether on my gaming pc and few days back i decided i will build a rig... since then, i am having nightmares

Got all parts:
6x sapphire pulse rx 560 (i know, not great card, but i could not get any better)
MB Asus prime H270 plus
processor Intel Pentium G4400
+ some RAM, risers and evga PSU to run it all.

I have set up the rig on win 10.
Set virtual memory to 16GB

Now all cards are detected by windows (but four of them in PCIEX1 slots are giving me warning msg:This device cannot find enough free resources that it can use. (Code 12))

Problem is, when i want to start mining. i use Claymore (Claymore's Dual Ethereum+Decred_Siacoin_Lbry_Pascal AMD+NVIDIA GPU Miner v9.6 to be specific)

If i have just 4 or less cards connected, claymore detects them all and mines with no issue - as far as i noticed, it does not matter which slots i use.

BUT if i plug 5th or 6th card, claymore is suddenly able to detect just cards in full PCIEX16 slots and i have no idea why.

I was suspecting crossfire, and spent quite some time trying to find out how to turn it off, as the option to turn it of just werent where it should be... then i found out in GPU-Z, that it is disabled on my cards, so i guess rx 560 does not support it at all(?)
I have tried several versions of drivers, even some crazy combining 2 version of drivers according to some guide, but nothing helped.

I would be really grateful for any advice as i have spent basically all my free time in past three days on this and i am starting to go crazy

[kamerico]

Install latest Bios firmware. Make sure above 4g is enable in the bios.. Try again. This is for the Enough system resources.

[fanatic26]

Try a dedicated mining OS. Simplemining, PiMP, and ethOS are all options and they all work better than Windows

[Kritix]

Install latest Bios firmware. Make sure above 4g is enable in the bios.. Try again. This is for the Enough system resources.

HA !
It finally works !!
Someone already mentioned the 4g option to me before, but i was not able to find it in bios... coz i did not have it updated... now i feel really stupid... half an hour action and i spent 2 days on it

So now just tweaking issues ahead of me it gives me 70-ish Mh/s and im hoping for 80-90 after some overclocking...

Bad thing is, if i use MSI afterburner to move my memory clock, it adjusts just one of the cards and the rest falls down to 300Mhz instantly.
 on different drivers i was not able to OC with some software at all...
I guess that leaves me with bios flashing, which i never done before. Im sure i will google some guide, but if you have some general tips, or something i should be careful about, i will happily take your advice

[Kritix]

Try a dedicated mining OS. Simplemining, PiMP, and ethOS are all options and they all work better than Windows

I have decided to go with windows as i am most familiar with it... if i will not be able to get it working i will try different options... or later once i get more experience and get into fine tuning performance
Anyhow, thanks for the tip

[goccat]

Install latest Bios firmware. Make sure above 4g is enable in the bios.. Try again. This is for the Enough system resources.

I had a 295x2 that would shit the bed whenever enabling 4g. Any take on why some GPUs support while others don't?

[Kritix]

so i am screwed again.
MSi afterburner or other software i tried wont let me OC my cards. Either i change anything and as soon as i press apply all changes reset to default, or (on newer drivers) can OC a card, but as soon as i do it others underclock so hard its almost like they are turned off.

I was thinking of bios flashing, but if i am not mistaken, from drivers version 16.2.X there is signature check for card bios...
Thing is, windows wont let me install any drivers older than 17.X.X as it takes them inferior to the default windows driver.
Also, i have red somwhere, that cards with polaris chip - which mine is - requires at least drivers 16.6.X

I have tried to bypass signature check using this guide:
https://bitcointalk.org/index.php?topic=1806196.0
but i failed miserably, it appears, that it cannot be done with these new drivers, wven when i restarted with disabled driver signature enforcement my installation failed because of failed signature check on the atikmdag.sys

do yoiu guys think that some way of overclocking exists for me?