I have built all my own computers, as well as ran a small computer build company for 4 years. I've been doing it since the mid 90s. I have a good power supply tester here, and it checks out perfectly every time. I also have Corsair voltage monitoring on the system, and can look at all voltages any time. They are all rock solid. I don't know if it is because of power dips occurring overnight (the system is on a very good UPS), or whatever, but this only happens when I go to turn the system on in the morning, and it has only happened about 5 times in the last 10 months. On this setup, the power button makes a faint beep when you press it, and that way you know it is responding. When the glitch happens, there is no faint beep. All I have to do it to power down for a few seconds, and power it back on. That seems like an issue with the MB responding to the power switch. Otherwise the system works great.