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Trying to get mobo to POST with Q code A9 and 99, no display. Possibly GPU?

Hi all, this is my build:


PCPartPicker part list: http://pcpartpicker.com/list/3Vm6sJ
Price breakdown by merchant: http://pcpartpicker.com/list/3Vm6sJ/by_merchant/

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor ($344.99 @ SuperBiiz)
CPU Cooler: Corsair H115i 104.7 CFM Liquid CPU Cooler ($99.99 @ Newegg)
Motherboard: Asus MAXIMUS VIII HERO ATX LGA1151 Motherboard ($199.99 @ SuperBiiz)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory ($64.99 @ Newegg)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory ($64.99 @ Newegg)
Storage: Samsung 850 EVO-Series 500GB 2.5" Solid State Drive ($160.58 @ Newegg)
Video Card: EVGA GeForce GTX 1080 8GB FTW Gaming ACX 3.0 Video Card (2-Way SLI)
Video Card: EVGA GeForce GTX 1080 8GB FTW Gaming ACX 3.0 Video Card (2-Way SLI)
Case: NZXT Phantom 530 (Black) ATX Full Tower Case ($119.99 @ Newegg)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($117.98 @ Newegg)
Monitor: Asus PG279Q ROG Swift 27.0" 165Hz Monitor ($749.00 @ B&H)
Total: $1922.50


I'm having trouble getting the mobo to POST with the graphics cards connected. When I try to boot with:

- Both GPUs: Q code 99 (Super IO initialization), no display, GPU fans start and stop

- GPU 1 only: Q code 99 (Super IO initialization), no display, GPU fans start and stop

- GPU 2 only: Q code A9 (Start of setup) occasionally, other times Q code 99, no display, GPU fans start and stop

- No GPU: Q code 99, BIOS displays (I suspect the Q code is because I'm using liquid cooling and it doesn't detect a CPU fan in the mobo)

All boots run through several Q codes (25, 41, 35,62, and others, before settling on 99 or A9)
When I get the BIOS to display I get a CPU fan error. However, all my RAM, my SSD, optical drive, and the HDD I moved from my old build appears.

I've been using the 2 6+2 VGA power cables to the aux power of the GPUs rather than the 6+6 adapters the GPUs came with (since I wouldn't have enough cables otherwise), in case that affects anything.

So I'm looking for what exactly this means. I have my own suspicions, but this is my second build so I'm hardly an expert. What do you guys think?


UPDATE:

I moved the cooler's 3 pin from the fan hub in the back of the case to the mobo's CPU fan header. Now the Q code with no GPUs is A0, and it boots to BIOS. Tried to install windows (to see if I can maybe update GPU drivers?) and it's giving me the "A required CD/DVD device driver is missing" USB install bug.

UPDATE 2

Ok, so I ran several test cases, so here are the results

Any single GPU, in either PCI-E slot: Everything powers on, Q code 99, there is an audible click, GPU fans turn off (lights on), bios loads, Q code changes into AE, then A0. However, GPU fans will not turn back on unless hard reset. Reset button on mobo doesn't turn them back on.

Both GPUs SLIed: Same as above, except nothing displays on the monitor regardless of where I plug it in (either GPU, mobo)
14 answers Last reply Best Answer
More about mobo post code display possibly gpu
  1. How is the CPU fan connected (pump and fans)?
  2. It was connected to the fan hub on the back of the case. Now I connected it to the mobo's cpu fan header. Q code 99 is gone, replaced with A0.
  3. Then you should have signal on the monitor.
  4. Yes, it boots with no graphics cards installed
  5. Now install the graphics card, connect the monitor to it, start the board and see what code getting.
  6. Ok, so I ran several test cases, so here are the results

    Any single GPU, in either PCI-E slot: Everything powers on, Q code 99, there is an audible click, GPU fans turn off (lights on), bios loads, Q code changes into AE, then A0. However, GPU fans will not turn back on unless hard reset. Reset button on mobo doesn't turn them back on.

    Both GPUs SLIed: Same as above, except nothing displays on the monitor regardless of where I plug it in (either GPU, mobo)
  7. "Any single GPU, in either PCI-E slot: Everything powers on, Q code 99, there is an audible click, GPU fans turn off (lights on), bios loads, Q code changes into AE, then A0. However, GPU fans will not turn back on unless hard reset."

    How do you power the graphics card?
  8. Each GPU has 2 6+2 pin VGA power cables plugged into 2 8 pin connectors on both the GPU and PSU
  9. Try updating the board's BIOS (all graphics cards removed), if newer version available.
  10. Ok. It's late, will report back tomorrow after work. Thanks for your help
  11. No problem.
  12. Ok, so I have BIOS version 2.17.1246. I tried to update to version 1701 (I think it's newer? I couldn't find anything on 1246 and 1701 was the newest I could find on their website for Win10.), and it says "update successfully." However, upon restarting the BIOS version still says 2.17.1246.

    Additionally, instead of booting straight to a "no Operating System Detected" page, I get an error that says

    "Please enter setup to recover BIOS setting.
    When RAID configuration was built, ensure to set SATA Configuration to RAID mode.
    Press F1 to Run Setup"
  13. Best answer
    I'm not sure about the issue. It could be the board, but I'm not sure. Try RMA-ing it.
  14. -Sigh- I was hoping to avoid that. Here's to anther week or two of waiting
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