I had a 2 year old PSU spark and shut down my pc. I tried a known good PSU, but original MB wouldn't turn on (no visible damage). I ordered a new MB, and still won't turn on. The PSU I'm now using is an older one, but same specs as the one that failed, and it works fine in my older PC. I've ordered a new CPU, thinking maybe it fried that as well, but thought I'd ask here if maybe I'm missing something. All connections are correct, but nothing happens when I attempt to turn the pc on. I've tested the GPU in the other system and it's fine, so only CPU and RAM left. I tested without the RAM installed, just to see if I could get a light or fan or anything, and nothing.