Horizontal fan grinding in 2009 Mac Pro
There's a fan on the middle shelf of my early 2009 Mac Pro. It's horizontal. When the fan is on it makes an annoying sound. The fan isn't usually on. If I put my thumb lightly on the fan's center the noise stops. Is there a way to fix this?
I only use this computer for an app that can't run on Catalina and a few other things.
Mac Pro, OS X 10.11