Hi!
I have a build in my NZXT S340, that has been working fine for about 3 months, but recently, I've been having to press and hold down the power button more than once, and sometimes for more than 10 seconds. I have tried flipping the power switch connector, trying different pins, and I also turned on my system by shorting out the pins with no problems. (Don't think it's a MOBO issue)
I hope I don't have to RMA this.
Thanks!
Video of problem: