Sony PCV-L640 - Manuel (Page 47)

Removing, Installing, and Replacing Components 33
14 Refer to the list you made in step 3 and restore any non-default
CMOS settings (see
“CMOS Setup Options” on page 75).
15
Select SAVE & EXIT SETUP from the main menu using the arrow
keys, then press Enter.
16
Type Y, then press Enter to save the changes and exit the CMOS Setup
Utility.
The computer’s CMOS settings are now restored.