Installing Or Replacing A Memory Module - Lenovo IdeaCentre H520g Hardware Maintenance Manual

4. Remove the old battery.
Figure 12. Removing the old battery
5. Install a new battery.
Figure 13. Installing a new battery
6. Reinstall the computer cover and connect the cables. See "Completing the parts replacement" on
page 93.
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 Chapter 6 "Using the Setup
Utility program" on page 53.
9. To complete the installation or replacement, go to "Completing the parts replacement" on page 93.

Installing or replacing a memory module

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
in the User Guide. To obtain a copy of the User Guide, go to:
http://www.lenovo.com/ThinkCentreUserGuides
This section provides instructions on how to install or replace a memory module.
Your computer has two slots for installing or replacing DDR3 UDIMMs that provide up to a maximum of
8 GB system memory. When installing or replacing a memory module, use 1 GB, 2 GB, or 4 GB DDR3
UDIMMs in any combination up to a maximum of 8 GB.
To install or replace a memory module, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 72.
3. Lay the computer on its side for easier access to the system board.
4. Locate the memory slots. See "Locating parts on the system board" on page 68.
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Lenovo H520gHardware Maintenance Manual