Do not open your computer or attempt any repair before reading and understanding the Read this first: Important safety information.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-connector assignments (configuration). 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 battery lasts forever. If the coin-cell battery fails, the date and time information is lost.
Refer to the “Lithium coin-cell battery notice” in the Safety, Warranty, and Setup Guide for information about disposing of the coin-cell battery.
Prepare your computer. See Preparing your computer and removing the computer cover.
Locate the coin-cell battery. See Parts on the system board.
Remove any PCIe cards that might prevent your access to the coin-cell battery. See PCIe card.
- Remove the old coin-cell battery as shown.Figure 1. Removing the coin-cell battery
- Install the new coin-cell battery as shown.Figure 2. Installing the coin-cell battery
Reinstall the PCIe cards if you have removed them. See PCIe card.
- Reinstall the computer cover and reconnect the cables. See Completing the parts replacement.Note: When the computer is turned on for the first time after the coin-cell battery is replaced, an error message might be displayed. This is normal after the coin-cell battery is replaced.
Turn on the computer and all attached devices.
Use the Setup Utility program to set the date and time. See Using the Setup Utility program.