Sony PCV-R545DS VAIO Computer User Guide (primary manual) User Manual page 18

When you are ready to turn off your computer for an extended period of
time, use the following procedure to shut down the computer.
Click the Start button on the Windows
menu.
Click Shut Down to display the Shut Down dialog box.
Select the Shut down option.
Click OK to complete the shutdown process.
Wait for your computer to turn off automatically — the power
indicator light turns off.
Turn off the display and any other peripherals connected to your
computer.
®
taskbar to open the Start