I recently bought and installed a new PSU for my computer, a 500W PSU manufactured by Ultra. Everything seems to be working just fine, except for one thing. There is a highly annoying high-pitched whine emanating from the PSU ever since installation. Oddly enough, this noise totally disappears when the computer is booting up and when it is in standby mode. I don't think it matters at all, but at the same time as the PSU installation I also installed another Gig of RAM.
Any help would be greatly appreciated!

Thanks!
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