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.