Sony PCV-R532DS User Manual

You may need to replace the lithium battery if your computer consistently 
loses the date or time settings after turning it off. The lithium battery has 
a typical life of three years, after which the battery may be too weak to 
power the CMOS memory. 

1

Reboot your computer by selecting Shut Down... from the Start 
menu, and then selecting Restart the computer.

2

If the error message “Error: Check date and time settings”appears 
during the reboot sequence, press F2 during the reboot process to 
access the BIOS Setup Utility. Otherwise it is not necessary to replace 
the battery at this time, and you can skip all remaining steps.

3

Compare all the BIOS options to their default settings (see 

on page 75). Make a list of all the BIOS options that 

are different from their default values. You will refer to this list when 
you restore the BIOS settings later.

4

Select Exit Discarding Changes from the main menu using the right 
arrow key.

5

Press Enter, type Y when prompted to discard changes, then press 
Enter to exit the BIOS Setup Utility.

6

Turn off the computer and unplug the power cord.

7

Remove the cover (see 

on page 22).

!

on page 16).