In PA tradition, I can pretty accurately describe my problem in car metaphors: I have a one-year-old system with a ASUS Z97-A motherboard and an EVGA Supernova 750 62 80 Plus Gold PSU, inside a Fractal Design R4 case, with a GTX 970 running Windows 8.1. And it runs very, very well (BSOD are extremely infrequent), with one exception: it seems like more and more often, when I start it up in the morning before leaving for work to check my mail, etc., the PC "doesn't turn over complete."
In other words, I can hear the machine beginning to boot up, but it sounds like while power briefly flowed to the motherboard, the PSU fans (one of the loudest parts of an otherwise pretty quiet machine) don't kick in fully. The case's power light comes on, but...nothing. My USB devices (just a typical HOTAS) don't boot up.
And nothing happens until. I can hit the restart button, or the power button, and invariably everything turns on just fine, normal boot, with no error messages or any indication that anything went wrong.
I was content to ignore this as a fluke, but I feel like it's happening more and more. I tried plugging in the PC directly into the wall rather than through an old APC unit--no change.
It seems fairly clear to me that, despite getting a pretty good power supply (at least by reputation, as far as I knew), I may have had a factory dud that needs to be replaced (thankfully it's fully modular--if that's the case, in theory I could just swap it out). But before I jump to that conclusion, I'd appreciate any second opinions.
The fact that I can sort of hear the PSU fan failing
to kick seems to support that theory--it just doesn't quite "turn over", and in effect only the case turns on. Otherwise, I think I'd get some sort of error notice for a power-caused crash on boot up. I've never had any other sort of power-related issues either, and I don't do any sort of overclocking (except for the basic CPU autoclock setting courtesy of my motherboard).