I opened up my ps4 for a clean because it was very loud and it’s turned on for a bit then turned off. After disassembling it and reassembling again, I found a loose screw above the power supply. Once the screw was in properly, my ps4 started to work again. if your having this issue as a result of you cleaning your ps4, I encourage you to check that all your internal screws are in properly and are not loose. Not sure how this works but it solved the issue for me. And my ps4 is a little less noisy but not completely silent yet :(
