Boot to only black screen :/

[Finners369]

[Ryzen 3600, MSI Tomahawk Gaming, 1660ti]

I was doing a clean Windows install ,because my last installation was fucked. And after going into BIOS, I changed my boot order to boot from USB first, restarted the PC with the Windows Install USB in, then nothing. At first I thought the USB was bugged or something so I unplugged it and restarted, again nothing. Wont go into Windows, USB or BIOS. Just a blank screen.

My monitors arent disconnected, and the PC is turning on, but just no video. Oddly after the PC is on, the power button on my case doesnt work now, only turns off when held down which boots straight to BIOS. I've also tried turning the PC off by disconnecting power and thats the same.

Only further idea I see is a BIOS flash and thats gonna be a bitch. Any other ideas would be nice :)

[Max392]

Try reset bios?
Unplug power
Remove cmos and wait for 10 mins without any power.
Your bios will reset settings, i hope this will bring monitor.