1. Turn your Sony VGNCR240EB laptop over.
2. Find the laptop battery release button lock for your Sony VGNCR240EB laptop.
3. Now that your Sony VGNCR240EB laptop battery is unlocked, find the battery release button down.
4. Holding the laptop battery release button, gently pull your battery away from the laptop.
5. Now that your Sony VGNCR240EB battery is removed, grab your replacement Sony VGNCR240EB battery for installation.
6. Insert the battery into the slot. Push the Sony VGNCR240EB battery towards the laptop and secure it in place.