So I was doing my first sorta build and something has gone wrong, my friend who has build many pc's is here helping me. I had a prebuild normal pc and am keeping only the ram, hard drive, and CPU from it and I bought a new case, motherboard, gpu, power supply. The only problem is that when everything is plugged in correctly and we turn on the power supply the motherboard doesn't light up or anything, nothing happens. Did i get a faulty one or something?