Panasonic Toughbook CF-19PJRFXAM Reference Manual page 3

Regarding Windows Vista
When high-frequency sound occurs
If high-frequency sound occurs around keyboard while using the computer, change the settings for the USB power saving
function.
A standard user needs to enter an administrator password and click [OK].
Set [USB selective suspend setting] to [Enabled].
Click (Start) - [Control Panel] - [System and Maintenance] - [Power Options].
A
Click [Change plan settings] of the current power plan.
B
In [Change settings for the plan], click [Change advanced power settings].
C
In [Advanced settings], double-click [USB settings].
D
Double-click the displayed [USB selective suspend setting].
E
Change settings of [On battery] and [Plugged in] to [Enabled].
F
Click [OK] and exit the [Advanced settings] screen.
G
3