Pc switches off after booting

[ceriumin]

Hello, I recently cable managed my pc inside because they were distrupting some cooling fans. After I did that I booted up my pc to do a quick check q d everything went fine but my gpu which the fans spun and turned off after 4 seconds (I think it is meant to do it). But I got no signal out of my hdmi cable, and then my pc randomly switches off after about 30 seconds. My important specs are below:

Asus strix Gtx1050
Ga 78lmt usb3 r2
Fx4300
Cx450

I never had issues with the pc until now

 

[alceryes]

Did you make sure all AUX power cables (MB/GPU) are plugged in?
Maybe start with minimal boot (CPU, 1 stick of memory, video card, keyboard, monitor) to see if it will even POST?