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Unique (or not so unique) problem, help appreciated.

post #1 of 10
Thread Starter 
Hi guys and gals. I've got a bit of a strange one.... New custom liquid cooled PC.
Asus Rampage V Extreme
Intel Core i7 5930
2 x AMD 295x2
16GB Corsair Platinum DDR4 3000mhz
Superflower 8pack 2000 watt Platinum PSU
Corsair 900D custom painted case

Now to the problem. My first mobo fried after exhibiting the same behaviour as the replacement. The computer booted into windows install fine, I installed fine but after 10 minutes clicked off. The PC then proceeded to click on and off, until I switched it off at the PSU, waited 15 minutes and turned it on again. The PC booted just fine, I installed temp software, cooling is fine running under 20 degrees, CPU and GPU, VRM etc. So overheating isn't the problem.
I've changed RAM and PSU, had a corsair AXI1500, figuring it was a problem with overvoltage - I bought the Superflower. Thinking it was possibly the RAM, I bought some Ripjaw 2666 (on the motherboard compatible list).
So, first motherboard down, got sent a replacement. Installed, same thing is happening, but the motherboard is fine.

Any ideas would be appreciated.

Cheers
post #2 of 10
Which parts are being watercooled, and what version of Windows?

If you boot into BIOS and let it sit there, will it eventually turn off, or only when you are in Windows?
post #3 of 10
Sounds silly but have you tried using a different wall socket? Could be a mains power problem. I'd also give updating the bios a try if you haven't already.
    
CPUMotherboardGraphicsRAM
i5 6600k @4.4GHz Asus Z170 Pro Gaming EVGA GTX 960 SSC 2GB 16GB Kingston HyperX Fury 2666MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung SM951 NVME 256GB Seagate Barracuda 1TB Some Asus thing that sounds like an aircraft at... Be Quiet Dark Rock 3 
OSKeyboardPowerCase
Windows 10 Logitech something Super Flower Leadex Platinum 550w Phanteks Enthoo Luxe 
Mouse
Corsair M65 
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CPUMotherboardGraphicsRAM
i5 6600k @4.4GHz Asus Z170 Pro Gaming EVGA GTX 960 SSC 2GB 16GB Kingston HyperX Fury 2666MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung SM951 NVME 256GB Seagate Barracuda 1TB Some Asus thing that sounds like an aircraft at... Be Quiet Dark Rock 3 
OSKeyboardPowerCase
Windows 10 Logitech something Super Flower Leadex Platinum 550w Phanteks Enthoo Luxe 
Mouse
Corsair M65 
  hide details  
Reply
post #4 of 10
A couple thoughts:

Have you tried booting with just one 295?
You say "custom painted case"; what kind of paint? Is it conductive? Are the motherboard standoffs painted too?
Lil' Roy Taylor
(11 items)
 
  
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Lil' Roy Taylor
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post #5 of 10
Thread Starter 
Okay, so it's Windows 8.1.
Paint is non - conductive car paint and it isn't the frame, just the removable panels.
I'll give booting in bios a try and leaving it running and ill try a different socket.
I've unplugged one 295x2 to no avail.
Components being Watercooled - CPU, GPU, chipsets.
Cheers.
post #6 of 10
A disassembly and reassembly outside of the case with verification of all connectors being seated and components being grounded may behoove you.
Lil' Roy Taylor
(11 items)
 
  
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Lil' Roy Taylor
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post #7 of 10
It does sound like a short or power issue for now. Did you have all of these parts installed with air cooling at some point to know they are good, or is this is all brand new and they have only been watercooled?
post #8 of 10
Thread Starter 
The whole system is new and built by my hand. Probably should have installed all air cooled really but hindsight is a beautiful thing.
I'll disassemble after trying some of the above suggestions though and let you know how I get on.

Thanks again.
post #9 of 10
Thread Starter 
Alright guys, so the darnest thing. The problem was not a component at all, it was a piece of thermal pad that was too thick between my EK monoblock and VRM modules, causing the motherboard to flex just enough for the CPU to lose contact with the socket. It became more severe as the CPU became hotter, hence it only happening 10 minutes into boot up.
Thanks for all your suggestions, it only dawned on me when I took the whole block off and fitted an air cooler to see if that made a difference.
Now its been running for a good few hours, benched using Firestrike with standard bios settings, getting a score of 22,608. Nay too shabby smile.gif

Thanks again!!
post #10 of 10
Good that you found it, definitely not a "usual" suspect here tongue.gif
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