One of my case fan bearings has gone bad. It's spinning at about 30 RPM right now. Loud AF. Don't have time to go to Micro Center before going out of town on Tuesday... Looks like I'm going to be shut down until I get back. Might fold from my laptop while I'm gone, but it won't be significant numbers.
Probably time to get an entirely new case. Take the opportunity to de-dust everything as I haven't opened this thing since August.