PC Power Off, Requires PSU Power Cycle / Rest - No Warnings After Flawless 2 Week Run.

[jkhh07]

I have a common boot problem, but with a slight twist that I really hope isn't worse case scenario.

New Build:
GIGABYTE GA‑970A‑UD3P
CPU: AMD FX-9370
Memory: Crucial Ballistix Tactical 8GB DDR3 BLT8G3D1608DT1TX0
CPU Cooler: DEEPCOOL Captain 120EX AIO Liquid CPU Cooler, 120mm Radiator
Video Card: Nvidia Geforce GTX 770
Storage: 60GB OCZ Agility 3 SSD 2.5in
Storage: 250 GB Western Digital 7200 RPM
Storage: 500 GB Seagate 7200 RPM
PSU: Corsair RM750i

Original Build:
GIGABYTE GA‑970A‑UD3P
CPU: AMD FX-9370
Memory: Crucial Ballistix Tactical 8GB DDR3 BLT8G3D1608DT1TX0
CPU Cooler: 120mm Dual Fan Corsair Liquid Cooler
Video Card: HD Radeon 3850
Storage: 60GB OCZ Agility 3 SSD 2.5in
Storage: 250 GB Western Digital 7200 RPM
Storage: 500 GB Seagate 7200 RPM
PSU: EVGA 500W Bronze.

History:

I built this PC over 4 years ago. Now 4 weeks ago I upgraded the PSU and then installed a used graphics card. Then about maybe a week later the CPU cooler died after a good 4.5 years of use. I replaced the CPU Cooler and have been running great for the past 2 weeks apart from the system alarming me about low memory (8GB). Sometimes during a game the PC would shutoff and automatically reboot. I thought the game I was playing must have crashed it, but come to think of it now, it was not a blue screen and the PC just power cycled (auto-reboot)

Problem:
The PC will not turn on in any way, no lights, no fan, nothing unless the PSU is powercycled. From a cool 5 minute rest, the PC will boot to the login screen and allow login but will shutoff about 5 to 10 seconds later. (35 seconds max total uptime) When immediately powered back on with PSU cycle, the PC shuts off again about 5 seconds later, with no warning, no beep codes, nothing. A power cycle of the PSU is required for the PC to boot.

This problem just started today, after running 2 weeks and no system changes during these 2 weeks. The PC died this morning while sitting mostly idle, with 10+ tabs open in chrome.

Other Facts/Thoughts
System is set to warn/beep at 197F, but there are no system beeps.

I can feel the CPU cooler fan running with lights on ( for that 15 seconds of uptime before shutting off)

After the 5 minute rest, I can boot to the bios and see the temp to be at 48-53C. I can stay in BIOS with no issues, (10 minute test)

If I boot to the OS, it will power off within 15 to 30 seconds, and then I cannot even get to the BIOS until it rests for 5 minutes

If I only boot to the BIOS, it will stay running with no issue.

Thoughts?

 

[jkhh07]

EDIT: In the process of writing this post I came across a major flaw in my build, however surprisingly the system had been running flawlessly for almost 5 years. It turns out the Gigabyte GA-970 series boards support only up the AMD FX8370 CPU with TDP 125W. I had been running an FX-9370 where TDP is high as 225W. The fact of the matter is, I'm not using a supported MOBO and CPU combo, so because of this I might consider this post answered, however either I will get a new MOBO, or upgrade to Ryzen all together. If I get a new MOBO, I will post back what happens. Hopefully I did not kill the CPU or the MOBO or other parts. If I did then it will be trashed.

Hopefully this post will help others with the same symptoms.

 

[Vic 40]

You could for the time being clock the FX 9370 down and see if that will help.

Also reseat the cooler for good measure and it's strange that a power cicle of the psu is necessry,like there's a safety measure that kicks in. Is there someones psu that you can lend for some testing? One that can power those parts.