Question Windows 10 will no longer boot, or even attempt to.

[Astronauman]

Windows 10 will no longer boot, or even attempt to. It ran fine and then all the sudden it just wouldn't boot up again
Scenario: turns on PC, screen to enter BIOS pops for ~2 seconds (I don't enter BIOS), screen shows no DP signal, screen to enter BIOS pops up again.
I've made a bootable USB to force the boot and I can get to the "repair your computer" screen, but none of those options have done anything, including system restore. I'm running out of options here and don't know what else to try.

 

[rgd1101]

full system spec?

 

[Astronauman]

full system spec?

ASUS TUF GAMING X570 PLUS (wifi)
Ryzen 7 3700X
32 gigs of 3600 speed RAM
booting from 1T SSD
Radeon NITRO+ RX 5700 XT 8GB
650 W PSU

System is about 4 years old

 

[Richj444]

Why not enter BIOS and verify that your boot drive is properly selected?