Strange shutdown then no power

[DigitalPixel]

Yesterday I was shutting down my PC and all of a sudden everything powered off meaning no status LEDs on motherboard or on GPU. I tried to start it up again but nothing happened. I unplugged the power supply and tried again but nothing. All this happened after I was using my new Corsair RGB mouse and keyboard but everything worked as it should at that time. I thought maybe the mouse/keyboard caused it. I plugged in my old wireless mouse/keyboard and tried again. I turned on the PSU and all status LED's came on. The PC started up but now my RGB lighting on the Evolv X was not being recognized in AURA. I thought maybe the RGB controller got fried or something. I left everything as it was getting late and today I started up the PC with the new keyboard/mouse and everything seems to be working. I never experienced anything like this before so I don't know what the cause could of been. This is a brand new build too. Any ideas?