1. Turn your HP nc8430 laptop over.
2. Find the laptop battery release button lock for your HP nc8430 laptop.
3. Now that your HP nc8430 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 HP nc8430 battery is removed, grab your replacement HP nc8430 battery for installation.
6. Insert the battery into the slot. Push the HP nc8430 battery towards the laptop and secure it in place.