Open the back cover of the notebook according to the following steps:

1. Turn the notebook upside down, and push out the battery retaining button to the end.

Note: Notebook batteries always have two buckles: a fixed buckle (which won't bounce back if pressed) and a movable buckle (which will bounce back if not pressed), one on each side.

2. Then, push the movable buckle outward with one hand and take out the battery with the other hand.

3. After taking out the battery, erect the notebook and unscrew the screw that fixes the back cover.

Note: If the battery compartment has a trademark, please uncover the trademark. There will be hidden screws under the trademark. If all the screws are not removed, the back cover will not open.

4. After the screws are removed, put the notebook flat, press it gently, and remove the back cover.

Note: Do not insert a sharp knife into the seam of the back cover and lift it up. There is a buckle above the back cover, which is easy to cause the buckle to break.