WinnebagoMan

Distinguished
Nov 4, 2006
2
0
18,510
I've just finished building a new PC for a friend and he had bought a case with a 400watt power supply already installed. Once I finished building it, it did not even power up, and the power supply made an intense screeching noise. I tried another power supply that I know for a fact works and when I installed it on the new build, I got the same result: a loud screeching noise.

I'm thinking it is a motherboard defect, but it could also be the CPU, but I highly doubt it. I just wanted to know if anyone can help me out with this problem, because I'm getting very irritated.