Anybody able to help me? So I'm building a new PC. I got the B450 Tomahawk Max with the Radeon 3700x CPU. I have the essentials plugged in. ATX, CPU Pwr etc and have double checked that the Power switch is plugged in the right way, but I just can not get any power at all. Nothing lights up and I have a new Power supply, which I have tested, so it's not that. The strange thing is that initially I did get PWR. Things were lighting up but then nothing and have no idea why. I thought that the motherboard had failed, so I got a replacement, but that doesn't work either. I have no idea what could be preventing me from getting any power at all. No signs of light at all. Is it possible the motherboard failed twice? I have no idea what to try next.