PC Master Race

Hi there, hope this is the right place for something like this.

So today I used my computer like normal, everything was fine this morning.
Then after a brief walk I came home and it won't turn on since.
When I click the power button there is the normal click sound of the psu and nothing happens.
My keyboard lights up, the ethernet port lights up, but other than that - nothing. Already tried to remove the ram, the graphics card (just removing the power cable of it turns on its red light), removing just the cpu power cable does turn on the motherboars red status light, but non of the fans or other status leds light up.

My build is not new and other than the keyboard I did not change anything lately.
The build consists of:
Asus ROG Strix B550 A
Ryzen 5600x
32 GB Ram (Crucial ballistix)
Asus RTX 3060ti
Corsair RM650 PSU

I also unplugged the psu for a while. It makes a slight buzzy noise after powering the computer, but I do not know if this is normal.

Can anybody help me please?

Edit: Thank you all for helping, I installed a new psu and everything is working again! Thank you.