Computer turns off 3 seconds after turning on

I've breadboard my equipment before installing it in the case. I'll start from the beginning I hook up everything to my mobo accept my case everything worked fine put all parts into the case then pushed the power button power led and front fan leds came on the when off I replaced the mobo this is the 1st of 3 mobo replacements I did the same with the second mobo breadboard everything works put in case exact same thing 2nd of 3 mobo now I just purchased my 3rd and final mobo breadboard outside and inside the case worked then install corsair h50 liquid cooler, ssd, optical drive, and case fans same thing happen like before I now know it's not my mobo at fault and I replaced it for no reason I'm working on a wooden surface wearing a anti static strap I took all safety pre cautions now I'm hearing it's my PSU.....

Case- Rosewill BlackHawk gaming Mid Tower
GPU- EVGA GeForce GTX 660 2GB
Memory- Curial Ballsix
CPU- i7 2600k
SSD- samsung 840
Cooler- Hydro h50 liquid cooling
Optical Drive- Samsung read/write?
PSU- Coolmax ZU Series 600w
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  1. Do you have the link of that PSU? Seems very "generic" for a rig like that.
  2. What test have you done?
  3. Tested every part one by one by one breadboarding etc
  4. Those test including use a different PSU on that rig?
  5. Sadly no I'm about to buy another one but let me ask you what do you think about that PSU?
  6. You don't need buy another one yet, not until we are sure that the problem is the PSU. Why not ask to a friend for a borrown PSU?
  7. Hmm okay i'll try that but what do you think about the one I own now?
  8. The description of your problem sound exactly how when the PSU start to die...
  9. But does my PSU even seem good?
  10. Yeah, seems good....but even the good things can fail, as my mother says: "The Doctors also die"
  11. Well okay I can take that
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