Dell Latitude E6540 Thermal paste Replacement

First remove the 3 screws to remove the lead

Then remove those 7 screws in order and try to keep track of which each screw place for when you assemble it back

Carefully remove the fan connector

carefully shake the heatsink until the thermal past loosens and it moves freely

Now pull down the heat sink from its place

Clean off the old thermal paste from the heat sink, CPU, and GPU, and then apply the new thermal paste

put everything back into place, and don't forget to attack the connector to its place, and with that you are done