Questions about GIGABYTE products > X99 Motherboards

GA-X99-UD4 No POST, No BIOS, No Boot - stuck in loop

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qwerty:
GA-X99-UD4 No POST, No BIOS, No Boot

All fans/lights/hhd's turn on for 5 seconds, PC then turns off (no beeps) for 1-2 seconds & then repeats. Any ideas?

CPU: Intel i7-5820K
Cooler: Coolermaster: 212X
Mobo: GA-X99-UD4
RAM: 16GB 2400 (F4-2400C15Q-16GRK)
GPU: GTX 285
CasE: Corsair 750D
PSU: Corsair RM-850
2x SSD
2X HDD

autotech:
Does your keyboard and mouse light up? Sounds like bent pins. Do you have any USB devices plugged in at start up?

qwerty:
Mouse & Keyboard light up (the three num/cap/scroll lights stay solid) until power cuts.

 I tried unplugging everything to isolate, i'll reseat everything & test each RAM module individually this evening.

At the moment I have 1 USB 3.0 External CD/DVD plugged in to the front port (w/ a Win7 DVD inside). Upon turning the PC on you can hear the disk spin & the LED activity light flashes (it has power) but no OSD.

ex58:
Download latest BIOS F9c and place on USB stick and flash with QFlash Plus.
How to flash:
http://gigabytedaily.blogspot.com/2014/09/gigabyte-x99-new-function-qflash-plus.html

Keep minimum hardware connected to board (even with 1 stick of RAM).
If bootloop again,try to Clear_CMOS.
 

wobble64:
Probably a stupid question: Did you remember to plug in the 8-Pin power supply for the CPU?

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