Sony PCG-R505TL - Manual (Page 129)

Troubleshooting
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3 Select the Device Manager tab.
4 Click [Refresh].
My notebook is unstable.
Your notebook’s operating system may become unstable if a lower power state,
such as Hibernate, is initiated then changed before the notebook completely
enters the lower power state. To restore the notebook to its normal operating
stability:
1 Close all open applications.
2 Press and hold the power button for four seconds or longer to shut down the
notebook.
The sound of my notebook’s fan is too 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.