On the bottom cover, unscrew all the screws with a Phillips PH0 or PH1 screwdriver.
Take a plastic tool and let's begin to open the laptop case.
Unclench the laptop case on each side.
Open the laptop...
open the case and unplug all the cables.
The connectors of these cables can be open by lifting the black bar up.
Now the cover with the keyboard can be remove.
The first step is to disconnect the battery cable from the motherboard.
Disconnect the USB module cable and fan cable from the motherboard.
Remove the two screws that secure the fan.
Disconnect the black antenna from the wi-fi card and detach the antenna from the fan case.
Now you can remove the fan from the laptop case.
At this stage, you can clean the radiator and fan from dust.
If there is a lot of dust inside the case, I also recommend removing this dust.
To clean the motherboard, use an antistatic brush.
If you need to replace the thermal grease, you will need to remove the motherboard
Unscrew one screw, then unplug the white antenna and remove the wi-fi card.
Unscrew the 2 screws and remove the battery.
Unscrew the 3 screws and remove the hard drive.
Disconnect the speaker cable from the motherboard.
Unscrew the 2 screws from the motherboard.
Now disconnect the display cable from the motherboard.
Unscrew the 2 screws from each loop.
Now you can remove the cover of display.
Remove the motherboard from the laptop case and turn it over.
Remove all screws on the cooling system.
Remove the old thermal grease from the CPU and GPU, as well as remove the thermal grease
from the radiator.
I always use one of these three thermal grease: GD900, Arctic MX4 and Noctua NT-H1.
These thermal pastes showed the best results in heat conduction tests.
In the description under the video, I left a link where you can buy one of these thermal
grease.
Apply a small amount of thermal paste to the surface of GPU and CPU.
Install the cooling system and fasten screws.