Question Display & USB ports not working on new build ?

Sep 26, 2021
Hello, So I recently just built a new computer, today actually. Its the second one Ive built with the first one working, no problems. This second rig though wont display anything to me on the monitor and usb ports on the mobo wont work either. All of the fans, AIO pump Power button etc work. Everything seems to be connected fine too, the gpu light tells me the cable is connected fine. Also when I connect my mouse it turns on for a split second and turns off right after.
Ive also tried reseating the ram and everything because Ive heard that could be a problem so now im here asking for help. The power button also only works to turn on but not to turn off.

Mobo: Gigabyte Aorus x570 Elite
PSU: Powerspec 750w 80 Plus Gold Fully Modular
CPU: amd ryzen 9 3900x
Case: Corsair 5000d
Gpu: Rx580 (Its old ik, im waiting for prices to drop on gpus)
CPU fan: nzxt kraken x53
Ram: Corsair Vengeance Pro 2x8gb 3200Mhz