Purchase replacement RAM
When you feel the need, go to the market and purchase some new RAM that matches your requirements. You can search on the internet and order it online, if you don’t have time to go to a computer supply store.
Turn the Mac book off
Once you have the new RAM, shut your system down and wait for a couple of minutes before taking the next step.
Unplug all the cords
Make sure all of the cords attached to your computer are unplugged before you replace the RAM. Also, disconnect the Ethernet cable and place the Mac book on a soft piece of cloth.
Open the battery compartment
Rotate the battery compartment latch towards the right side until it is opened. If you are facing any problem, use something like a coin to move it. Once you have done that successfully, remove the battery and put it somewhere in a safe place.
Once you remove the battery, you will see some screws, which are there to protect the RAM. Remove them and lift the metal cover from the rear end of the battery compartment. Place both things close by as you will have to put them back in their original position later.
Push lever to remove RAM compartment
After lifting the metal cover, you will see the RAM compartment. Push the lever to remove the RAM and place the new one inside.
Put everything back together
You have to put all of the things back together and then place the Mac book in its original position.
Restart the system
Plug in all the wires and restart your system to see whether the new RAM is functioning properly.