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Hi there, if this isn't in the correct section, I apologize I can delete/post again elsewhere if needed.

I just built a new 6 GPU rig.  I have successfully built two others.  After all connections completed, I plug in PSU and turn it on.  Immediately I hear a clicking sound (like a turn signal on a vehicle) and my GPUs are flashing on/off as is my mouse.

Anyone have any ideas as to why this would happen before I even have fired her up?  This PSU was just working well a few hours earlier powering an Antminer R4, so I know it should be okay.

Thanks in advance for any help you can provide.

-Reelen

That could be caused by a lot of things.

Badly seated GPU/riser or memory, faulty hardware, short, bad PSU, etc.

Try double checking everything and then removing all GPUs and trying to turn it on and if that works, try putting back everything one by one.

Try pulling five gpus.

Boot and load driver.

If it works add a second gpu boot.

Then boot a second time.

Check to see it works with two.

Add the third boot twice see if the three work.

Keep adding one at a time
With two boots each time.

Good luck!

Alright I have some work to do. Thank you so much for the quick response.

Sounds like a short tripping the PSU.  Remove all GPUs, use IGPU for display, and troubleshoot from there.

That was my first thought as well.