6 GPU RIG Problem: Black Screen at boot

spartanz51 · October 2017

Hi,

I did some rigs, but I have a problem with one:
It works with 4 GPU, without problem
But, when I want to put the 5th Gpu, i can't boot

It stucks in black screen at boot, and can't do anything
In Safe mode, I'm able to boot, and I Can see 5 gpu

I have w10 64bits
Asus prime z270-a

Gpu are Asus r9 280x
Risers are powered, i use two alimentations of 1000w

Bios: gen3 + 4g decoding enabled

Can you help me please ?
Thanks, and sorry for my english

lablett · October 2017

I think you may have installed windows in non EUFI mode.

Run msinfo32 and check bios mode value. It should read UEFI and you may have 'legacy'

Check this first ?

spartanz51 · October 2017

lablett said:
I think you may have installed windows in non EUFI mode.

Run msinfo32 and check bios mode value. It should read UEFI and you may have 'legacy'

Check this first ?

Thanks @lablett for your reply.
Windows is in UEFI mode

wirelessnet2 · October 2017

Make sure you enable Above 4G decode

lablett · October 2017

ok, may be a driver issue. I would try some old and new drivers. Make u use DDU to uninstall between drivers. Also note that you have to install the driver when 4G is disabled.

spartanz51 · October 2017

wirelessnet2 said:
Make sure you enable Above 4G decode

Hi, thanks for your reply
Yes, I already enabled it in bios

lablett said:
ok, may be a driver issue. I would try some old and new drivers. Make u use DDU to uninstall between drivers. Also note that you have to install the driver when 4G is disabled.

Thanks, i'm going to try
But why it works with 4 , and not the 5th?
(exactly same card)

ecs87 · October 2017

Gen1, not gen 3.

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6 GPU RIG Problem: Black Screen at boot

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