Sony PCG-VX89 VAIO User Guide (primary manual) User Manual page 165

Why won't the power management respond?
Your computer's operating system may become unstable if a lower power state,
such as Hibernate, is initiated and changed before the computer completely
enters the lower power state.
To restore the computer to its normal operating stability
1 Close all open programs.
2 Restart the computer by pressing Ctrl+Alt+Delete simultaneously. The
Windows Task Manager dialog box appears, and you can restart the
computer from the Shut Down menu.
3 If this procedure does not work, press and hold the power button for four
seconds or longer to turn off the computer.
Why is the sound of my computer's fan so loud?
Use the PowerPanel™ utility to change the Thermal Control Strategy setting to
Quiet. This setting slows down the CPU speed. See PowerPanel Help for more
information.
To reduce fan noise
1 Right-click the CPU icon
Profiles. The AC Power Profile Editor window appears.
2 Double-click System to open the file if it isn't already opened.
3 Double-click Thermal Control Strategy - Performance, and select Quiet.
4 Restart your computer.
Why does the System Properties dialog box display a slower CPU speed than
advertised?
This is normal. Because your computer's CPU utilizes a type of CPU speed
controlling technology for power conservation purposes, System Properties may
display the CPU's current speed instead of the maximum speed.
Troubleshooting Your Computer
on the taskbar, and select Edit/Create
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