Troubleshooting a fried system due to plugging in usb header while running system

[Cambolicious]

I have recently plugged in a usb for a fan controler directly into the motherboard usb header while the system was running. I now know this is one of the big DO NOTs of computer systems. My issue is figuring out what parts need to be replaced. This is a pc i built myself and it is my first one so it is a desktop pc.

The only led's on the motherboard that light up are
-Red Power On button (directly on board)
-the power settings (TPU, EPU)
-xmp profile switch

Problems:
-The pc will not boot.
-I can not get the monitors to display anything (even bios)
-front panel leds (data flashing light, power switch) don't light up
-none of the 6 fans spin
-I don't see the bios led light go on when pressing the power button on the board
-No secondary machine that can test the cpu or gpu for damage.


What i have done to troubleshoot.

• 
  
  
  I've removed all the ram and gpu and tried to boot.
  
  Tried reseting cmos by holding down the power button for 1 minute while pc is plugged in but psu I/0 switch is off.
  
  I tested the hard drive used to boot the system and instantly started to boot in another system. (was not set to slave in bios so I'm not sure if that counts as working)
  
  Unplugged everything except cpu power, motherboard power and tried to boot.
  
  Jumped Power Supply used a paper clip in pin 4 and 5 (green 4, black 5) of the psu motherboard 24 pin connect plug. The cpu fan did spin! I tried next to plug in a nzxt fan control and it did not light up or power the fan. My blur ray drive and hdd both powered on.
  So my question is can the psu still be bad if the fan spins on a jump?

System Spec
OS- Windows 8.1
CPU- Core i7-4790K Part Number BX80646I74790K
Motherboard - Z97-PRO(Wi-Fi ac)
PSU- SeaSonic Platinum 1000W 80+ Platinum Certified Fully-Modular ATX Power Supply


here is the link for the rest of the parts in pc part picker
http://pcpartpicker.com/b/2H3Ff7

 

[hillmanant]

You gotta break this thing down to nothing and start breadboarding it to see where the problems begin. A case speaker is obviously a must here and isolation outside the case. Start with this guide, I realize this is for new builds but follow the procedures and any problems at various points throughout will tell you which hardware is failing. Post your process and findings please and see what we can glean from this process.