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Chapter 5 Trouble Shooting
CMOS Battery Problem
A message “CMOS Checksum Failure” displays during the booting process or the time (clock) resets
when booting -
Try to reboot the system.
If the message “CMOS Checksum Failure” appears during the booting procedure even after rebooting, it
may indicate failure of the CMOS battery. If so, you need to replace the battery. This battery normally
lasts two to five years. The battery is a type CR2032 (3V). You may replace it by yourself. The battery is
located under the System Device Cover on the bottom of the notebook. See Chapter 4 for more details.
Memory Problems
The Operating System does not show an increased memory capacity when you have already
installed additional memory -
Certain brands of memory module may not be compatible with your system. You should ask your vendor
for a list of compatible DIMM.
The memory module may not be installed properly. Go back to Chapter 4 to review the details of this
operation.
The memory module may be defective.
The Operating System issues an insufficient memory error message during operation -
This is often a software or Windows-related problem. A program is draining the memory resources.
Close the application programs you’re not using and restart the system.
You need to install an additional memory module. For instructions, go to Chapter 4 Upgrading Your
Computer.
