Refurbishing a laptop – Lenovo T420 Remove keyboard, replace CPU thermal paste and clean cooler


This visual guide[1] will run through the steps to remove the CPU cooler, clean it and replace the thermal paste on the CPU.

You will also be able to remove the keyboard and get access to the RAM[2] through this tutorial.

Make sure that you have the required tools.

Terms definitions
1. guide. A user guide, document or tutorial to explain how to complete a task.
2. RAM. RAM Stands for Random-Access Memory. It is a form of computer memory that can be ready or changed in any order. A RAM device allows data items to be read or written in almost the same amount of time, irrespective of the physical location of data inside the memory.
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