Kernel Power Error 41

[SpiritSC]

Hello friends, i've had a couple of headaches with this error in the past and i change the power supply for a CX750, however things didn't work, after a while i figure out the look like was a problem with one of USB connectors, i stop using that connect and things worked fine for a couple of months, but yesterday i was playing XCom 2 and the pc shutdown for no reason, first thing i did was take out the power connect wait a little and power the pc again, worked fine and looking thought the Windows logs i found the Kernel Power error, the usb who i thought was the trouble wasn't connect, i did use normally until now, i was playing CoD BO 3 for about 2-3 hours and the pc shutdown, i did everything the i could and couldn't restart my pc, i change the power supply for my old OCZ600w (the one the i change for my CX750 when i thought the was the power supply who was causing the trouble), after turn on again i could look the logs and saw again the Kernel power Error once again.
Things the i did:
Test the mem - OK!
Change the Power Supply - Ok!
No OC - Ok!

Latests Nvidia Drivers - Ok!

I don't think the power supplys are the trouble, since i had problem with both of them and after figure the USB out they were working fine...

My pc specs:
3570K (stock now, previously 4.2ghz)
mobo Z68MAG43-G3
GTX 780 (stock)
16gb Corsair Vengeance
SSD 120 EVO Samsung
PS: OCZ600W // CX750

Any ideias?

[JefferyD90]

A error 41 only means the system didn't turn off right.

[SpiritSC]

This error have been a major problem for me since it's happening almost everytime the i'm playing, i change the power supply to my CX750M and didn't turn on everything was connected, swipe my OCZ600W, seems the CX750M is the problem, starting the RMA. 
Thanks anyway!