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Note: Remove any PCI-Express connector cables that impede the installation of PCI-Express cards.
Coin-cell battery
Prerequisite
Before you start, read Chapter 1 "Important safety information" on page 1 and print the following
instructions.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel connector assignments (configurations). A coin-cell battery keeps this information active
when you turn off the computer.
The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell
battery lasts forever. If the coin-cell battery fails, the date and time information is lost. An error message is
displayed when you turn on the computer.
For access, remove the computer cover. See "Computer cover" on page 56.
Removal steps
Notes:
• Reset the system date and time in the UEFI BIOS menu.
• To dispose of the coin-cell battery, refer to the "Lithium coin-cell battery notice" in the Safety and
Warranty Guide.
Power supply assembly
Prerequisite
Before you start, read Chapter 1 "Important safety information" on page 1 and print the following
instructions.
Although there are no moving parts in the computer after the power cord has been disconnected, the
following warnings are required for your safety.
.
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Chapter 6
Hardware removal and installation
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