Vega 56 x 3 - Miner Freeze at start !! PLEASE HELP

[MinerNV]

Hello everyone

I am new to mining and got a 3 x Vega 56 rig.
I had follow the guide step by step to setup the rig (http://vega.miningguides.com/)

Once I start the Cast-XMR with 3 GPU(GPU0 ,1 , 2), the whole computer freeze.

However, if I start it with only GPU 0,1 or either 0 or 1 is fine.
The both GPU0 and 1 can hit 1900+ h/s.

If I mine with GPU2, and it will just freeze.

What Can I do with it?


My setup:

OS: WIN 10
Motherboard: TB250-BTC
RAM: 4G
Harddisk : 128G SSD
GPU: 3 x ASUS STRIX OC 8GB VEGA 56
PSU: 1250W power supply

[gotminer]

I had to reduce the intensity on the card that is feeding video.  Did you do that?

[MinerNV]

I got it now

When I set the speed of PCIe setting in BIOS to Gen1.
The problem cleared, thanks 

[gotminer]

I got it now

When I set the speed of PCIe setting in BIOS to Gen1.
The problem cleared, thanks 

Nice!