Ok so I built a computer about a week and a half ago, and after overcoming many hurdles, I had finally gotten it to work. It was smooth sailing for a full week, until something devastating happened. I was in the middle of watching some Youtube video, and my computer just shut down unexpectedly. I heard an unpleasant noise from the case to my right (the case is on the ground, so I didn't have a view of what happened. So, I have looked through other threads and a lot of them say that I should return and replace the PSU and plug it in somewhere better (my original spot had like, 6 plugs into the same outlet). Whenever I press the power button, the motherboard lights up, fan starts spinning (CPU and Case), GPU lights up. However, this beautiful sight only lasts for a split second, and then everything turns back off. A few seconds later, it will light up for a split second then turn off again. A few seconds later this happens again. This happens over and over until I unplug it. So, I am under the assumption that since these components are lighting up, then they're not broken, and I only have to replace the PSU. Is this assumption correct or are all of my parts screwed? Thanks!
Edit: The model is EVGA 600 B1
Edit: The model is EVGA 600 B1