well, i'm still planning on overcloking the gpu's, so with that in mind the second power supply is not a bad idea (btw electricity is a fixed amount included in the rent, so not too concerned with energy efficiency)

Alright so i had some more help outside, just for future reference i'll describe what was wrong, and what solved it.
First off, the power supplly was indeed insufficient, so i'm adding a 2nd one, this should solve the cards failing.
Besides that, i had a monitor hooked up to internal graphics, this seemed to cause problems, so instead i'm now using a gpu for the display, which made one more card work.
With that fixed i can manage to get all 6 cards working!

So i had 5 gpu's working and mining, when after about 30 min, windows shut down with a blue screen stating: Windows encountered a problem.
After reboot it will autostart mining, but it only recognizes 2 gpu's now.
I'm running windows 10
Aorus z370 motherboard
intel i3 processor
250gb ssd
6x AMD Radeon RX-580 (1 wasn't working anyway)
Corsair 1100 watt psu

I seemed to have this problem before, but i wasn't there to monitor it, i was able to fix it, but then while monitoring it it happened again.

How would i go about doing that? i'm not familair with the bios enough to know how to update..

checked all cables, reset cmos, activated 4g encoding again, and set pci to gen2.
Still only 5 cards are detected.

yea it's still only 5 that are shown in device manager, it's an 1100 watt psu

Yes i'm using Windows 10, i have only installed the basic drivers for the AMD gpu's
Crimson adrenaline is now installed, downloading and installing the blockchain drivers now!

Hi there,

I just finished building my first mining rig, using the aorus z370 gaming motherboard with 6 pci slots.
I managed to get 5 of the gpu's working, but the sixth is not being recognized for some reason.
I have already set the bios settings to gen2 and enabled 4g encoding, which made 5 gpu's work (before it was 3)
Now i still need a solution for the sixth one, and i hope some of you could give me some advice!

(Components:
    6x AMD Radeon RX580
    1x AORUS Z370 Gaming Motherboard
    6x pcie risers
    ssd hard disk
    8th gen i3 processor
    )

Hi there,

I just finished building my first mining rig, using the aorus z370 gaming motherboard with 6 pci slots.
I managed to get 5 of the gpu's working, but the sixth is not being recognized for some reason.
I have already set the bios settings to gen2 and enabled 4g encoding, which made 5 gpu's work (before it was 3)
Now i still need a solution for the sixth one, and i hope some of you could give me some advice!

(Components:
    6x AMD Radeon RX580
    1x AORUS Z370 Gaming Motherboard
    6x pcie risers
    ssd hard disk
    8th gen i3 processor
    )