I have a ryzen 1800x, 32gb g.skill trident 3200 cas 14, asus crosshair vi hero motherboard, asus 1060 gpu, 500gb samsung 960 evo nvme ssd, and a new corsair hx750i psu. I built the system but it won't power on. The lights on the motherboard light up but neither the case's power button nor the start button on the motherboard will start the system powering on. I'm really not sure what to do now in terms of troubleshooting. I've checked the connections several times and everything is set up right. This isn't the first system I've built and I've never encountered this problem. Is the motherboard dead on arrival? I could understand the case's power button not working somehow, but shouldn't the start button on the motherboard start the system regardless of the case's power button? From reading some other threads it sounds like there's a possibility the motherboard needs replacing but before I try the other crosshair vi I have (amazon sent two by accident, have to send one back or get charged for it) I'd like some advice on how to proceed.