1. Turn your HP DV7-1285dx laptop over.
2. Find the laptop battery release button lock for your HP DV7-1285dx laptop.
3. Now that your HP DV7-1285dx 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 DV7-1285dx battery is removed, grab your replacement HP DV7-1285dx battery for installation.
6. Insert the battery into the slot. Push the HP DV7-1285dx battery towards the laptop and secure it in place.