Msi Z97 Gaming 5 fifth gpu adding

[Pesuvati]

Hi,
Can somebody help me with adding fifth card to my mining rig, Problem is that Windows 7 find all cards but one is with the yellow exclamation mark.
Device status: Windows has stopped this device because it has reported problems. (Code 43)
all cards are r9 280x execpt one whitch is 280.

When disconnecting any card everything works fine.


Allready done,
Uninstalled all drivers and added 6xgpu mod and re-installed drivers ([Guru3D]-radeon-crimson-15.12-with-dotnet45-win7-64bit)
bios settings changed PCI-e ports from auto to GEN1 and then 8x4x4x (tried also gen2,gen3)
changed new riser
Changed riser to diffrent pci port

Is it possible to even get 5 gpu´s to work with windows 7?

Help is really needed

Thanks, Pesuvati

[evakka]

You will have to install windows 10 or to go for another OS like ETHos