HP zx5000 - Manual (Page 155)

5–48 Maintenance and Service Guide
Removal and Replacement Procedures
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Steps 3 and 4 apply only to HP Pavilion notebook models.
3. Remove the 10 PM2.5×13.0 screws 1 and the 3 PM2.5×6.0
screws 2 that secure the base enclosure to the notebook.
4. Lift the base enclosure straight up 3 to remove it.
Removing the Base Enclosure on Pavilion Notebook Models