When you turn your computer off, the CMOS chip stores information about date and time and configuration details necessary to start and run the system. A small button cell (coin) battery provides the power for the CMOS chip memory.
Replacement batteries are available from Northern Micro's service department. After you replace the battery, you must reset the date and time and restore the configuration settings. To do so, run the setup utility.
See BIOS Setup Program to find out how to run the setup utility.
Generally CMOS batteries last for about five years. Here are some signs that your CMOS battery needs to be replaced.
Invalid configuration will appear on your screen.
Run Setup appears on your screen.
Press F1 to continue appears on your screen.
Invalid drive specification appears on the screen after you've pressed F1.
Clock Error or Clock Message appears on your screen.
The clock on the computer loses time.
The computer is constantly showing the wrong date
To replace the CMOS battery, push the adjacent retention clip and the battery will pop out of the socket.
| The battery is held by a retention clip. | Press the clip as shown. |
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| and gently ease the battery out of the socket. | |
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Install the replacement battery (CR2032 button cell) by pushing it into the socket until it snaps into place.