About a year and a half ago I built a budget gaming desktop and one of the areas i skimped on was the PSU. I know, i know... not something you want to do, but I didn't know that at the time. I just thought any old power supply would cut it. Anyhow, the problem is this: recently we noticed that whenever I'm using the computer we can't listen to AM radio stations without hearing a high pitched noise. I automatically assumed it was the power supply. Anyway, I was hoping someone knew of a way to cut down on the noise without going out and buying a new PSU. Is there a kind of filter that you can buy? Thanks!