I followed SimsHsia's + RocketScientist's instructions, replaced the fan, replaced the thermal grease while I was in there, and put everything back together. Results were not quite as expected, however: 1. Although my CPU is much cooler than the 95+ °C is was running at before, it's still at around 70° C, without any particularly high processor load. Is this normal? 2. The crack which I showed before, turns out not to be above the fan at all. So, I'm not sure why this is the third fan I've had to put in in 3.5 years Happy Holidays everyone!