My PSU just started making a noise, like if something's touching the fan. It's a different computer from the one in my specs. It's a sturdy black one, however this PC has no case and the PSU is positioned in a way that the fan is on top and sucks in air, so a lot of dust goes in. Since September it was this way. But a minute ago it's making this loud noise, though nothing's touching the fan. Should I turn off my computer or not. I'm doing a LOT of stuff right now. Once my house doesn't burn.
PS. I only restart my computer after 3 months when I need to reinstall Vista - yes I could activate it however it's a reminder Windows got bloated over the period of time.