I recently replaced my motherboard, cpu, and ram in my desktop and it works fine. I had a spare power supply (about 1 year and 6 months old, NEVER used, it came with my case) so I decided to take my old hardware and build spare pc. I got everything hooked up and when it came time to power it up nothing happened. I noticed that everytime I plug in my power cable, I can hear a very faint "whistle" noise coming from the pc. I cant pinpoint exactly where its coming from because it is so faint. At that point I plugged in a known working power supply and it does the exact same thing. I've done everything I can think of and still now luck. Anyone have any ideas?
Thanks in advance