I think this fan may need to be replaced
I pried this fan out of Silas’s PC when his cpu fan started running so fast that it was shaking the house (went upstairs to see what the deal was, realized it was the computer, and when opening the access doors so it would cool down realized that (a) the fan wasn’t fanning and (b) that it felt really loose when I tried to spin it by hand. I knew it was probably dead, but I didn’t realize just how dead the thing could be.