system fried

What Happened? Yesterday, It was a normal day of using my PC. Considering it has been working for few months no issue, I thought there would be nothing wrong. I turned on my PC and all the RGB all light up for about 2-3 seconds - Then I saw sparks and heard a loud bang coming from the PSU. Then...

Basically I bought a new PSU (cooler master MWE 750 gold full-modular). Popped it into the system, ensured all cables were connected and I hit power. The first time the system spun up, but the screen and peripherals were dead. The fans didn't "rev" like a normal boot, they just lightly spun...