Lenovo ThinkCentre M79, Hardware Maintenance Manual

Page: 122 / 186

4. Remove the old battery.
Figure 20. Removing the old battery
5. Install a new battery.
Figure 21. Installing a new battery
6. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on
page 151.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
7. Turn on the computer and all attached devices.
8. Use the Setup Utility program to set the date, time, and any passwords. See “Using the Setup Utility
program” on page 63.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 151.
Replacing the hard disk drive
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the hard disk drive, do the following:
1. Remove any media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 105.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 106.
114
ThinkCentre M79 Hardware Maintenance Manual