1. Turn your Toshiba M35X-S329 laptop over.
2. Find the laptop battery release button lock for your Toshiba M35X-S329 laptop.
3. Now that your Toshiba M35X-S329 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 Toshiba M35X-S329 battery is removed, grab your replacement Toshiba M35X-S329 battery for installation.
6. Insert the battery into the slot. Push the Toshiba M35X-S329 battery towards the laptop and secure it in place.