How to Apply New Thermal Paste to a Laptop

Thermal paste transfers heat from your laptop's CPU and GPU to the cooling system. Over time, it dries out and becomes less effective, causing overheating and performance throttling. Replacing it restores optimal heat transfer and cooling performance.

1. Power down and prepare your workspace. Shut down your laptop completely and unplug the power adapter. Remove the battery if possible. Wait 30 minutes for internal components to cool down. Prepare a clean, static-free workspace with good lighting and gather your tools: Phillips head screwdrivers, plastic prying tools, thermal paste, isopropyl alcohol (90% or higher), and lint-free cloths.
2. Disassemble the laptop to access the cooling system. Remove all screws from the bottom panel, noting their locations as they may be different lengths. Carefully lift off the bottom panel using plastic prying tools. Locate the cooling fan assembly and heat pipes connected to the CPU and GPU. You may need to remove additional components like the battery, hard drive, or RAM to access the cooling system fully.
3. Remove the cooling system. Disconnect the cooling fan cable from the motherboard. Remove the screws securing the heat sink assembly to the CPU and GPU in a diagonal pattern to ensure even pressure release. Carefully lift the entire cooling assembly away from the processors. The old thermal paste will be visible on both the processor dies and the heat sink contact points.
4. Clean off the old thermal paste. Apply isopropyl alcohol to a lint-free cloth and thoroughly clean the old thermal paste from both the CPU and GPU dies and the corresponding contact points on the heat sink. Remove all residue until the metal surfaces are completely clean and shiny. Allow the alcohol to evaporate completely before proceeding.
5. Apply new thermal paste. Place a small drop of thermal paste in the center of each processor die - approximately the size of a grain of rice for the CPU and slightly smaller for the GPU. Do not spread the paste manually. The pressure from reinstalling the heat sink will spread it evenly across the entire surface.
6. Reinstall the cooling system. Carefully lower the heat sink assembly back onto the processors, ensuring proper alignment with the mounting holes. Install the screws in a diagonal pattern, tightening each screw gradually in multiple passes rather than fully tightening one at a time. This ensures even pressure distribution and optimal paste spreading.
7. Reassemble and test the laptop. Reconnect the cooling fan cable and reassemble the laptop in reverse order of disassembly. Replace all screws and components in their original positions. Power on the laptop and monitor CPU and GPU temperatures using hardware monitoring software like HWiNFO64 or Core Temp to verify the thermal paste is working effectively.