Mining rig crashes! HELP

[bercywinkler]

So I just built an 8 GPU mining rig (DUAL-RX580-O4G) with 8 GB of RAM, 120 GB SSD, Intel Pentium, ASUS Z270Z motherboard, 2x Corsair RM1000i.
I also used M.2 adapters and risers to fit all the GPUs.
Installed Windows 10 Pro, AMD drivers, Bitdefender antivirus and claymore's miner, Corsair Link, TeamViewer and MSI Afterburner.
The rig worked just fine for 3 days. Power draw of around 1400 W, GPU temps under 70 C and GPUs clockspeed at 1200 mhz and memory clock at 2000 mhz.
No crashes everything worked as expected.
Until one night the rig shut down at around 3 AM.
When I tried starting it up the rig it did not show as being online on Teamviewer.
So I tried accessing the rig with the usual monitor, keyboard and mouse but it displayed nothing on screen.
So I disconnected 6 GPUs from the motherboard and the system booted properly but crashed after a few minutes and ever since it has random crashes after booting, sometimes even before posting or while I'm in BIOS.
By crash I mean that the system reboots.

I tried everything I could possibly do but I am left without ideas.
I thought that maybe the problem was with Windows or with the drivers or overclocking but I would say that these are not the source of the crashes since the system sometimes crashes even when I'm in BIOS.

Please help me solve this issue, the rig is a $5000 investment I really don't want to end by selling piece by peace.

 

[Paul NZ]

Sounds like a PSU prob. If there are no bluescreens

 

[bercywinkler]

Sounds like a PSU prob. If there are no bluescreens

I don't think so since I use 2x 1000 W PSUs.
These should easily deal with a total of 1400W power draw, right?
And it used to be 700W from one PSU and 730W from another.

 

[clarkjd]

Sounds like a PSU prob. If there are no bluescreens

I don't think so since I use 2x 1000 W PSUs.
These should easily deal with a total of 1400W power draw, right?
And it used to be 700W from one PSU and 730W from another.

Still sounds like a PSU problem. Those PSUs are designed to work as stand alone units. When you start trying to run both at the same time in a single chassis, There is no telling how the 1400 watt power draw will be interpreted by the OPP circuitry of a single 1000 watt unit.

 

[bercywinkler]

Sounds like a PSU prob. If there are no bluescreens

I don't think so since I use 2x 1000 W PSUs.
These should easily deal with a total of 1400W power draw, right?
And it used to be 700W from one PSU and 730W from another.

Still sounds like a PSU problem. Those PSUs are designed to work as stand alone units. When you start trying to run both at the same time in a single chassis, There is no telling how the 1400 watt power draw will be interpreted by the OPP circuitry of a single 1000 watt unit.

And what do you suggest as a possible solution?

 

[clarkjd]

Sounds like a PSU prob. If there are no bluescreens

I don't think so since I use 2x 1000 W PSUs.
These should easily deal with a total of 1400W power draw, right?
And it used to be 700W from one PSU and 730W from another.

Still sounds like a PSU problem. Those PSUs are designed to work as stand alone units. When you start trying to run both at the same time in a single chassis, There is no telling how the 1400 watt power draw will be interpreted by the OPP circuitry of a single 1000 watt unit.

And what do you suggest as a possible solution?

Single 1500 watt PSU? I have no experience in multi-PSU setups, I have no idea how you would tie two together.

 

[ko888]

I would suspect CPU.

 

[Paul NZ]

Can still be faulty. Look in event viewer. See what errors come up, when it happens