Digital Storm: Aura - Troubleshooting & Parts

Hello all, looking for some advice, please.

I have a Digital Storm: Aura, purchased Feb 2018. It has run like a champ until 2 weeks ago. Now it is not booting to Windows. It displays the ASRock logo in white on a black background, then eventually the logo goes away and is replaced by what appears to be a non-blinking hyphen in the center area of the screen though skewed off to the left and up. After a couple of minutes (much longer than a normal boot) the hyphen shifts to the far upper left corner, the screen goes dark and never finishes booting.

I have tried restart, safe boot, removed peripherals. I recruited some local talent and they were not able to determine root problem. They suspect the motherboard has failed.

The excellent support staff at Digital Storm have tried to help, but my options appear to be limited. I will need to recover data off my drives, if possible - so I am working on that.

My 2 questions:

1 - Anyone have any suggestions for troubleshooting/isolating the possible problem? Resetting CMOS was suggested and I will try to do that later today.

2 - I am told the Aura is no longer available and replacement parts are hard to find. Does anyone have recommendations on good online places to post hardware components for sale? I have done a brief search but only found eBay - and there were no Aura related posts there when I checked.

Any help/advice would be welcome! Thanks for your time :)
-gf

Digital Storm Aura - Packaging Receipt

Chassis Model: Digital Storm Aura
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7-7800X (6-Core) 3.50GHz
Motherboard: ASRock X299E-ITX/ac (Wi-Fi) (Intel X299 Chipset) (Mini-ITX) (Up to 1x PCI-E Device) System Memory: 32GB DDR4 2666MHz Digital Storm Performance Series
Power Supply: 450W (80 Plus Gold Rated) (Supports up to GTX 1080)
Expansion Bay: - No Thanks
Optical Drive: - No Thanks
Storage Set 1: M.2 SSD - 500GB Digital Storm Performance Series
Storage Set 2: Hard Disk - 1TB 7200RPM (SATA 3Gb/s)
Storage Set 3: - No Thanks
RAID Config: - No Thanks
RAID Card: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections) Graphics Card(s): 1x GeForce GTX 1070 8GB (VR Ready)
Sound Card: Integrated Motherboard Audio
HPC Processor: - No Thanks
Extreme Cooling: Digital Storm Vortex Liquid CPU Cooler
HydroLux Tubing Style: - Not Applicable, I do not have a custom HydroLux liquid cooling system selected HydroLux Fluid Color: - Not Applicable, I do not have a custom HydroLux liquid cooling system selected Cable Management: Premium Cable Management (Strategically Routed & Organized for Airflow)
Chassis Fans: Standard Factory Chassis Fans
Internal Lighting: - No Thanks
Airflow Control: - No Thanks
Chassis Mods: - No Thanks
Noise Reduction: - No Thanks
LaserMark: - No Thanks
CPU Boost: Stock Factory Turbo Boost Advanced Automatic Overclocking
Graphics Boost: - No Thanks, Please do not overclock my video card(s)
OS Boost: - No Thanks, Please do not tweak the services on the operating system