UPDATE: I fixed it!! It was the PSU.
So I just built my first PC in like 20 years. Everything was going fine, I was installing Windows and got to the network setup step and my wifi was having trouble staying connected. I figured it was because I hadn't set up drivers yet, so I thought whatever, no problem, I'll just move it by my router and plug in an ethernet cable.
So I powered off and moved it, and...dead. Nothing is happening when I hit the power button. No fans, no lights, nothing. I've made sure no cables got jiggled loose or anything. Maybe I shorted something somewhere on the motherboard? I can't see anything without fully disassembling and having to rebuild it. I really don't want to do that, but I guess I'll have to unless I'm missing something obvious. I'll test the PSU tomorrow but I doubt it's that, these are all brand new parts.
Any ideas?
Specs:
AMD 7800X3D
ASRock B650E PG Riptide WiFi
Sapphire Nitro+ Radeon RX 7800 XT
2 x 16GB Crucial DDR5 RAM
Seasonic GX-850 PSU
I didn't :(
I admittedly haven't had much time to mess with it, but I confirmed the PSU is working, so I suspect the motherboard is fried. Still need to confirm that before I order a new one, and figure out why it happened so I don't do that again. I'm hoping my CPU is still fine.
I really appreciate everyone's suggestions, helped me narrow it down a bit
Dang! Best of luck getting it sorted. You might be able to return he mobo as defective if it was nothing you did to cause it.
Finally fixed it, turns out it was the PSU.
No idea why it was testing fine, but I tried a different one in my machine and everything works fine :D
Yay! Glad its fixed :)