Originally Posted by
Bushfiva
But what I'd personally do about now is sneakily buy another motherboard without telling anyone.
You and me both
Actually, before doing that, I'd put my test meter across the outputs of the power supply when it's working, and again when it isn't.
I've changed lots of power supplies over the years (probably several a year for the various folks I "look after"), and only one motherboard. They have a habit of dropping one of the power rails.
I've not needed a hammer to do that - they're usually held in by four screws.
But I think this is a new power supply and a new case because the old one was dud.