i just finished my first build. Everything lights up, the fans spin, but theres no display and the BOOT debug LED on the B550 board stays solid.

Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key
No bootable device -- insert boot disk and press any key
ive reseated the RAM twice and checked the 24-pin and CPU power cables 😭 im terrified i bent a pin or fried smth. whats teh next thing to check? everything else seems right: the PSU switch is on, teh case fans spin, and the motherboard RGB is doing its thing. i just cant get any picture or beep out of it.