1. Turn your Sony VGN-C190G laptop over.
2. Find the laptop battery release button lock for your Sony VGN-C190G laptop.
3. Now that your Sony VGN-C190G 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-C190G battery is removed, grab your replacement Sony VGN-C190G battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-C190G battery towards the laptop and secure it in place.