My daughter’s laptop kept on shutting down for no obvious reason. I checked the event logs after it did it last night and could not find any issue. It was very hot, so I suspected over-heating.
Today I removed the base plate by undoing 8 little screws, then under that there is a heat exchanger that is held in place by 5 more screws. I undid them and lifted it off. In the gap between the fan and the vent was the huge plug of dust you can see in the pictures below.
See Dell’s website here for more details on how to remove the “Processor Thermal-Cooling Assembly” as Dell call it.
I also ran ccleaner across the registry and deleted a load of junk. The computer is running much faster now.
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