Hello, this is my first post here!

Basically just as the title says - my Dimension 4100's PSU sounds a bit like a beehive. At the first power-on, it is sufficiently quiet - I can hear the fan running but it's not anything super loud. The PC runs Windows 98 SE, and when I use MS-DOS the PSU stays quiet. It's when I boot into Windows and use it for a bit that the supply really starts to get rev up and get irritating. Atm, I don't remember the exact mobo or PSU brand I have, though I can provide them if needed. I have not made any mods to the system other than upgrades well within specifications. I know that the supply is a 200w OEM model; unfortunately, it has a proprietary 8-pin motherboard connection instead of ATX. Any fixes, or is it time to look for another supply?