I have a Radeon 4870 making a fan noise like this: Radeon blower fan rattle I've taken the fan completely apart and I'm at the stage of figuring what is best to do. I was able to take a cheap fan apart and figure out how these fans are part together. That was a case fan with a similar rattle, but putting oil down the shaft didn't do much to help it. I'm able to lightly touch the middle of the fan while it's running, which has the effect of making the noise stop, if only for a moment. Also, turning the case sideways (fan laying horizontal) keeps the noise from happening. While I'm thinking about it, be mindful of how your fan is put together. I was trying to follow this video: Blower fan disassembly On the case fan I practiced on, there was a little rubber cover over where the top of the shaft and plastic washer are. Well, being less-than-prudent, I just followed the guy in this video and got confused as to why my fan wasn't popping with the 3 screwdriver method. DERP. The fan on my GPU had a rubber cover that allowed me access to the shaft and washer. Anyway, what do I need to do now? Should I wipe down the shaft and surrounding areas with a lint-free cloth or just leave what's there on there? Also, should I put in bearing grease or sewing machine oil? Thanks in advance.