I´m experiencing the same thing with an almost identical system, did you managed to fix it?
Here is my original post, hope you don`t mind:
Hi folks,
I got a ticket at Gigabyte Brasil, but due to a possible delay for the holidays and the fact that my warranty expired (2 weeks before this issue :/), I decided to try my luck here and maybe get a feedback.
After 1 year (and 2 weeks!) working perfectly, my gaming pc started to fail a few boots, taking 2-3 tries before booting. Once started everything was fine and I could play for hours without a problem.
A few days later the problem escalated to this boot loop, where everything lights up (fans, drives, leds) and shuts down 5-10 seconds later, after 2 more seconds the cycle starts again.
My specs (never overclocked):
Proc: I5-4690K
MB: GA-Z97X-Gaming 3 (Rev. 1.0 - BIOS F7)
RAM: Corsair Vengeance 1600Mhz 2x8Gb
VGA: EVGA GTX 970 SC
HD: WD Black 2Tb
SSD: Samsung 850 EVO 250Gb
CPU Cooler: Cooler Master 212x
PSU: EVGA SuperNova B2 750w
What I´ve already tried:
- Taking everything off the case, and testing it bareboned, only PSU, CPU, cooler and 1 stick of RAM (tried all 4 slots)... boot loop
- Same thing with no RAM... beeps then reboot
- Swapping parts with my HTPC (LGA 1155), tested everything except the CPU and motherboard... the parts from my gaming PC worked perfectly on the HTPC
- Took everything apart, cleaned, reaplied the thermal paste, reseated the RAM, CPU and power cables several times
- Carefully searched for scratches, bent pins, blown caps or any sign of damage
- Since the CM 212x have a backplate, I decided to go back to the stock cooler
- Cleared the CMOS by jumper and battery removal
- Tried to force a BIOS restore from the backup chip
After a couple of days fiddling with it I´m completely out of ideas and about to order another motherboard. :/
Any help would be much apreciated...