1. Turn your Sony VGN-FZ290EGB laptop over.
2. Find the laptop battery release button lock for your Sony VGN-FZ290EGB laptop.
3. Now that your Sony VGN-FZ290EGB 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 VGN-FZ290EGB battery is removed, grab your replacement Sony VGN-FZ290EGB battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-FZ290EGB battery towards the laptop and secure it in place.