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Boot problem with Crosshair VII motherboard

Level 7

I recently purchased an ASUS - ROG CROSSHAIR VII HERO motherboard and AMD Ryzen 5 2600X CPU. (Upgrading from an ASUS X99 Sabertooth motherboard and intel i7 5820k.) After transferring everything over from my previous motherboard and powering on for the the first time, I was greeted with a screen saying the CPU had been changed. After this the BIOS screen appeared and said there were two errors: a CPU fan error, and I believe some sort of error involving the PCI express slot. (I should have taken a picture of the screen as unfortunately I can't remember exactly what these error messages said.) Later, when I was examining the mother board, I discovered I had plugged the CPU cooler (a Corsair H110i GTX liquid cooler) into a chassis fan connection port rather than the CPU fan connection port - so I believe this mistake accounts for the CPU fan error. (I've since corrected this mistake.) Anyway, next to each of these issues was an option that let me toggle from manual to automatic. I selected the automatic option and the computer proceeded to reboot.

Unfortunately, starting with this reboot my computer screen has been completely blank. No matter what I do, I can't seem to get my computer to boot up. Things I've tried:

-Moving the ram around to different slots
-Pressing the "Safe Boot" button on the motherboard
-Removing the CMOS battery for several hours
-Moving my GPU to a different PCI slot

Some additional information:

-The Q-Code LED on the motherboard shows a zero followed by a backwards six. This is quite odd as there's no q-code in the appendix of my motherboard manual that feature backwards numbers.
-The Q-LED on the motherboard shows a yellow green light. According to the manual this indicates a booting device error.
-The hard disk LED on the motherboard lights up during the boot sequence, indicating hard disk activity.

A couple of photos showing the code/error light and the motherboard:

Other components used: 256GB ADATA SP610 SATA III SSD (operating system), 500GB Samsung EVO SSD, 16GB 3200MHZ Silicon Power DDR4, Asus 1080ti Strix GPU, 850 watt EVGA power supply. Also, rather than using thermal paste on my CPU, I'm using a graphite thermal pad. I'm running windows 10.

Any help would be hugely appreciated.