HP Compaq Presario,Presario 7954 Supplementary Manual page 46

10. Using a screwdriver, remove the drive retaining screws as shown.
11. Carefully back the drive out of the drive cage.
12. Refer to the drive manufacturer's instructions when inserting the new drive
into the drive cage.
13. Secure the drive in the drive cage by replacing the drive retaining screws.
14. Connect the power supply cable.
15. Connect the data cable.
16. Replace the computer cover.
17. Refer to the manufacturer's instructions supplied with the new device to
complete the necessary software configuration.