PC cannot boot, only ram is powered

[AfterFeces]

First, here is a video of when I power on my PC: https://imgur.com/gallery/1JEoRvf

 

This is my parts list:

PCPartPicker Part List

CPU: AMD - Threadripper 2950X 3.5 GHz 16-Core Processor  ($799.89 @ OutletPC)
CPU Cooler: Deepcool - Castle 280 RGB 96.7 CFM Liquid CPU Cooler
Motherboard: MSI - MEG X399 CREATION EATX TR4 Motherboard  ($499.99 @ Amazon)
Memory: Corsair - Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-2666 Memory  ($85.99 @ Newegg)
Memory: Corsair - Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-2666 Memory  ($85.99 @ Newegg)
Memory: Corsair - Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-2666 Memory  ($85.99 @ Newegg)
Memory: Corsair - Vengeance RGB Pro 16 GB (2 x 8 GB) DDR4-2666 Memory  ($85.99 @ Newegg)
Storage: Samsung - 960 Pro 1 TB M.2-2280 Solid State Drive  ($357.15 @ Amazon)
Video Card: Gigabyte - GeForce RTX 2080 Ti 11 GB GAMING OC Video Card  ($1198.99 @ Amazon)
Power Supply: EVGA - SuperNOVA T2 1000 W 80+ Titanium Certified Fully Modular ATX Power Supply  ($187.98 @ Newegg)
Total: $3387.96
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-06-18 22:17 EDT-0400

 

My PC is unable to boot after I powered it off one night. I have not changed any software nor hardware that night. When I powered it on next morning, all I got is a black screen while the PC itself looks fine (RGB lit, fans spinning). This situation happens occationally thus I am not too worried. Then I powered it off by holding the power button on my case to turn it off and reboot it. Second try results in the same issue. So I did it again. However, the third attempt lead to the situation same as my video posted above. Results from subsequent booting are the same.

 

I have tried a brand new PSU. Results in same issue. I have also removed all devices and peripherals, leaving only 1 ram, CPU, M.2 SSD mounted on motherboard and GPU on. Result is the same. The motherboard has been returned to MSI for a new one. It did not solve the problem, neither. Switch power outlet is futile, too. When I jump my PSU it could deliver consistent power to fans and LEDs without interruption.

 

What could be the reason of this booting issue? Thanks for your answers.