Hi guys, My computer, dell dim 3000, was always noisy to begin with, and I'm ok with it. 3 weeks ago, I purchased new PSU (Antec 350W ATX), and the noise was reduced little bit when I first pluged it in. The PSU works great since Antec is a good name. About 1 week ago, my computer started making noise really really loud if I leave it there and go away for 15 minutes or so. When I come back, it will be like that forever, and I will have to turn it off for 10 minutes. If I leave the case open by one side, the noise will be reduced like 5 times (seriously, even more). The only softwares that I installed by the time it started making noise is: - Zone Alarm. - AVG. - Screensaver. I never heard that these softwares can make noise, but hey who know, just tell you guys everything possible. Thanks for reading, D.