HP Compaq Presario,Presario R4000 Maintenance And Service Manual page 147

Removal and Replacement Procedures
2. Position the top cover with the rear panel toward you.
3. Remove the four PM2.0×11.0 spring-loaded shoulder
screws 1 that secure the thermal module to the notebook.
4. Remove the thermal module 2.
Removing the Thermal Module
Maintenance and Service Guide 5–57