PC suddenly quit. i7-6850K, Asrock Taichi X99

[JJOATz]

Hi. So I have a bit of an issue at the moment. My PC is about 1 year 4 months old. The system specs: EVGA G3 1000W 80+ Gold, i7-6850K, ASRock Taichi X99, x3 Corsair DDR4 8GB 2666MHz, PowerColor RX 580, and a Toshiba SDD (don't remember exact model) with Linux Mint (and encrypted Home). The system was on for 10 or 11 days without issue and I've not ever had a previous issue with it working, but woke up to it being off. The power didn't shut off as no clocks (EDIT -- i.e. coffee maker, alarm clocks, oven, microwave) were messed up. I've done as much trouble shooting as possible. I can power the system up, but it doesn't do much.

 

The system will either

• come on for a few seconds and the CPU fan will be at max speed, restarts and the runs at idle for a few seconds and then shuts off. -- No video
• come on for a few seconds and the CPU fan will be idling, then restarts with CPU fan running at idle for a few seconds and shuts off. -- No video
• comes on and stays on for maybe 20-30 seconds, then shuts off. -- No video

After the above, the board cannot be powered back on unless I shut off the power supply and short it to drain power.

 

What I've done, and get no beep codes or error message on the on-board display:

• Tested PSU with 24-pin short and it works fine.
• Disconnected everything except a graphics card and 1 stick of RAM.
• Tried each of the sticks, one at a time, in each of the DIMM slots
• Tried different graphics cards: PowerColor RX-580 and some old low-end generic PCIe cards
• Checked CPU, re-seated, new thermal paste.
• Reset CMOS between each different test using on-board pins/header
• Tried BIOS A and BIOS B.
• (EDIT) Tried just CPU
• (EDIT) Tried just CPU and RAM

It's late and I'm rather tired, so please excuse me if I've left out any information. Please let me know if you need anymore details. I'm essentially out ~$700. I don't want to buy a new CPU and motherboard, unless absolutely necessary.

 

I believe I just need to figure out which component isn't working so I may contact the company (Intel and/or ASRock, as both have a 3 year warranty from the manufacturer; parts were purchased Nov. 2016).

 

Any help and/or advice will be more appreciated than I may express via text.

[Anghammarad]

First I would test your PSU in another System, or get another PSU to test yours with... 

 

From then on if nothing changes, it's off the the harder trouble shooting races.

[JJOATz]

Would it matter what board it test with?

[Sauron]

Quote

The power didn't shut off as no clocks were messed up.

The CMOS battery keeps your clocks in sync even without grid power, so it could very well be a power issue.

 

In fact, given what you tried so far, it REALLY looks like a power supply issue. If you don't have another one to test try asking a local repair shop.

[JJOATz]

Just now, Sauron said:

The CMOS battery keeps your clocks in sync even without grid power, so it could very well be a power issue.

Clocks as in microwave, coffee maker, stove, alarm clocks, etc. Will edit main post to reflect this information. Will try connecting PSU to other board(s).

[Damascus]

If you're willing to trust a complete stranger with your stuff and pay shipping I have everything required to test your hardware (6950x, x99 oc formula 3 psus, 3 gpus etc.)

 

If not, start an RMA.  Asrock is particularly anal about their form, make sure to fill it out perfectly.

[Sauron]

Just now, JJOATz said:

Clocks as in microwave, coffee maker, stove, alarm clocks, etc. Will edit main post to reflect this information. Will try connecting PSU to other board(s).

Ohh I see. I thought you meant "it can't be a power supply issue".

[genexis_x]

Wait..what's the PSU model?

[Anghammarad]

18 minutes ago, JJOATz said:

Would it matter what board it test with?

not really. The test is to see if the other machine boots up. If possible it should be close to the power consumption as the not working one. 

 

I had quite a few systems at hand where the PSU aged and couldn't deliver enough "juice" to fire up the computer again. Fans were spinning,, lights turned on, and then it turned off again, looping this behavior. 

[JJOATz]

25 minutes ago, ZM Fong said:

Wait..what's the PSU model?

EVGA G3 1000W. It was new as of Nov 2016.

 

20 minutes ago, Anghammarad said:

If possible it should be close to the power consumption as the not working one. 

Sorry, I don't have a system anywhere near as powerful as this. The test board did boot up perfectly fine.

[Anghammarad]

1 minute ago, JJOATz said:

EVGA G3 1000W. It was new as of Nov 2016.

 

Sorry, I don't have a system anywhere near as powerful as this. The test board did boot up perfectly fine.

Having ruled the psu out then the next steps you already took, starting the machine with minimal hardware. 

 

Can you see any faults on the Taichi, like Elkos leaking, does it smell like there was a current where there shouldn't have been one (burned) ?

 

 

[JJOATz]

I don't see any damage anywhere on the board. No odors at all. This has me completely baffled. I've not had a PC ever just quit working without warning, let alone the fact this is just over a year old. The graphics card was picked up in late 2017. 

[DogKnight]

 

My hunch would be the PSU or Motherboard.

You could attempt a rebuild with clean. E.g. pull it all apart, make sure all connectors and sockets are clean of dust (use compressed air or similar), and re-seat everything. I would pay particular attention to PSU connectors to the motherboard and RAM.  

 

There is also the slight possibility there is a short of some nature if the motherboard isn't grounded properly to the case. But unless the tower was moved around prior to this occurring, there really isn't likely anything to have cause this to suddenly occur.