2.Tighten the upgrade bay screw.
3.Replace the 4 hard drive screws (1), and then replace the protective screw caps (2).
4.Replace the battery.
5.Turn the computer
6.Turn on the computer.
Replacing an optical driveCAUTION: To prevent information loss or an unresponsive system:
Shut down the computer before removing the optical drive from the upgrade bay. Do not remove the optical drive while the computer is on, in the Sleep state, or in Hibernation.
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.
86 Chapter 6 Drives