I have a newly built PC that I put together myself, I was excited to power it on for the first time, and the machine's response was not what I was hoping for. I have an I-5 9400f, z370-a 2 motherboard, 16 gb of gddr4 memory at 2666 mhz, a 1 tb ssd,an nvidia 1660 ti gpu, and a 550 watt power supply. The first thing I checked for was an incompatibility between my motherboard and CPU, I went to asus' website to check what it was compatible with and saw that 9th gen intels could work. Now I suspect that a dead power supply could be the culprit, when I hit the switch on the back of the psu, from "0" to "I", the motherboard's lights activate (it's an RGB mobo), nothing else, no case fans, no cpu cooler, not even the fan on the psu is on. Is there any helpful advice on troubleshooting?