A few weeks ago I purchased a GT 430 for my desktop and installed it. Upon booting the machine I heard a fairly loud noise that I figured was a stray cord hitting a spinning fan. I shut down the machine and opened the case and booted it up again. The sound was gone. I did not move any wires and it was obvious that none were in the way of any fans.
I ignored the issue. Today I installed a DVD drive in the same machine. After installing it and booting the machine I heard the same noise. Again I openend the case and booted up. The sound was still there and it was obvious a cable was not causing it. If I moved the case around I could get the sound to go away. I shut it down one more time and could not replicate the sound. I powered off and on 6 or so more times and could not get the noise to reappear.
I assume the GPU's fan is causing this because it did not happen prior to installing it. Seems like this only happens after I've been working in the case... anybody have any ideas?