Time to use that warranty.
Also read https://www.cnet.com/forums/discussions/bios-will-not-boot-unusable/ as they are working similar.
Finally google THE DEAD PC and learn about downsizing and how to build a PC from the smallest selection of parts. Never toss it all into the case at once. Unless you are bald or want to be bald.
Motherboard: MSI Z270 SLI PLUS
CPU: Intel Celeron 3900 Skylake Dual Core
GPU: Windforce OC 1070
PSU: Sentey 725w
RAM: DDR4 EVO Potenza
SSD: 250gb Kingston