Google "Bad Caps" to find the answers. Don't assume it was your newer PSU, but also likely it was the capacitors near the CPU area. Check the motherboard first for signs of a blown capacitor.
I was browsing the internet when all of a sudden my computer made a loud ballon pop noise which i presumed came from my fractal design 750 watt power supply. However, no funky smell came from it and my computer no longer turns on anymore. Is my computer fried?