not sure if my psu is on its way out, ive noticed when turning my psu off after shutdown by the switch mainly to stop my youngest turning my pc on when im asleep if I dont shut it down after turning it on it goes slow then shuts down on its own. theres been a few times ive noticed my fan not spinning on my rmx850 but I looked up that its designed to be like that. I wanted to get a tester to rule everything out before going a system down with a rma or wasting my time and corsairs.