HP 4415s - ProBook - Turion II M520 User Manual page 28

14. Replace the screws in the battery area. Your computer has either 2 or 3 screws that need to be
replaced.
NOTE:
15. Turn the computer upside down on a flat surface and replace the battery.
16. Reconnect external power and external devices.
17. Turn on the computer.
24 Chapter 4 Replacing the hard drive
Refer to the illustration that most closely matches your computer.