HP ProBook 450 G1 Notebook PC - Manual (Page 49)

To use the security screw:
1. Remove the battery.
CAUTION: Removing a battery that is the sole power source for the computer can cause loss
of information. To prevent loss of information, save your work and shut down the computer
through the operating system before removing the battery.
2. Remove the security screw from inside the battery bay (1) and insert it (2) to lock the service
cover in place.
NOTE: Refer to the illustration that most closely matches your computer.
Removing or replacing the service cover
CAUTION: To prevent information loss or an unresponsive system:
Save your work and shut down the computer before adding or replacing a memory module or hard
drive.
If you are not sure whether the computer is off or in Hibernation, turn the computer on by pressing the
power button. Then shut down the computer through the operating system.
Removing or replacing the service cover 39