Problem with the gigabyte z370 hd3

[khraa]

Hello guys,

I have a little problem with this mobo, when i put in it 4 gpus, the system becomes very slow (even in the bios), sometimes it boots sometimes not at all (black screen, not the "no signal one") when I manage to boot to the desktop and start mining with nicehash, the system freezes (without bsod).
When I run it with 3 gpus, it works perfectly !

All drivers are updated
The lastest bios version is installed
Windows 10 updated
Risers(6c) checked one by one
Hdd checked

The config :
Z370 hd3
I3 8100
4gb ddr4
60gb hdd
R9 290
Rx580
Gtx1060
Gtx1070
Psu : fsp 700w + gigabyte b700h

Right now the rig is running with 3 cards, i installed the gtx 1060 on my gaming/mining rig with a 1080 and its working great.

Thank you for your help

[ViperGuy]

You have run out of PCIE lanes. Set the PCIE bus to version 1.0 in the bios.

[khraa]

I did that, the system is no more laggy but when I start mining, windows still freezes ☹

[xxshazxx]

Hi, have you solved the problem with the MB. I have the same issue. :\