Asrock H81 Pro BTC R2.0 won't start after Power Failure

[od1n]

Hello,

I build my rig with these components:

• Asrock H81 Pro BTC R2.0
• Intel Pentium G3260 (2x 3,3GHz)
• 1x 8GB Crucial DDR3L-1600 CL11 Single in Slot 1
• 120GB Patriot Burst 2,5" SSD
• Corsair CX850M
• MSI GTX 1070 Aero ITX OC 8GB
• PATA powered Risers
• Wireless Mini HTPC Keyboard with Touchpad
• VGA connected to the MoBo
• All connectors (Power) are used in the board (ATX, ATX12V, 2x Molex)
• Win 7 64bit

Bios default, unless:

• Power On after Power Fail: On
• tried PCIe Auto, Gen.2 and Gen.1
• iGPU: tried both
• Audio: tried both
• Sieral and Parellel Ports: disabled

My problem (both with and without Mining GPUs)

• When I press the Power-Button the fans spin, I see the POST-Screen (1/2s) and then OFF.
• After pressing the Power-Button again same sequence.
• Pressing the Pwr-Button the third time the fans spin, stop, spin again, stop, spin again ... and ... e voila ... POST ... and BIOS available.
  Exit saving changes boots the system and the miner runs flawlessly for hours. But when I power off and want to power on again same issue.  

I searched google but did not found a solution.
Is there any idea what's the Problem for the board to boot directly?

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[1714857293]

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[1714857293]

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[jillscarbrough]

I have the same experience with this motherboard and this is what I have done and it works:
1. Reset BIOS via jumper
2. Unplug the CMOS battery and plug it in again.
3. Move the CPU Memory Slot to DIM1 or DIM 2

Good luck

[od1n]

i will try it when I'm back at home. Thanks so far.

Did you made these steps with plugged in mining cards? What did you change after that in Bios? Have you set up first GPU to internal or PCIe? Where have you plugged in your Monitor?

Do you have DDR3L-Ram? - 1,35V?