To LatiosXT: Yes, I realize that updating the firmware of the SSD may require a fresh install of Windows, but who's to say that a reinstall (clean) might not be needed in the end, eventually?
Plan for the worst, hope for the best. If an action causes undesirable consequences, you better prepare for it. Hence I don't like updating the firmware unless you can rule everything else out. It's like updating BIOS: you're really not supposed to do it unless you have a real issue that can be solved by updating it (though it's safer these days to do it anyway).
Anyway, power supply issues can mask as other hardware faults. For instance, I had a hard drive that was clicking and refusing to come up, but had no reason to believe it would just poop out like that (it was past the mark of "sudden failures"). Turned out the power supply was failing. But honestly, if the system worked fine with the last motherboard and that's the only thing you changed, most of my finger pointing is on the motherboard.