Toshiba Satellite C640 Series User Manual page 134

Problem
Double-clicking does
not work
The mouse pointer
moves too fast or too
slow
The mouse pointer
moves erratically
Sound System
Problem
No sound is heard
USB
Refer also to your USB device's documentation.
Problem
USB device does not
work
User's Manual
Procedure
Try changing the double-click speed setting in
the mouse control utility. Click Start
Panel Hardware and Sound
access it.
Try changing the double-click speed setting in
the mouse control utility. Click Start
Panel Hardware and Sound
access it.
The mouse might be dirty. Refer to your mouse
documentations for instructions on cleaning.
If problems persist, contact your dealer.
Procedure
Adjust the volume by pressing FN + 3 to
decrease or FN + 4 to increase.
Check the software volume settings.
Make sure the headphone connection is secure.
Check Windows Device Manager. Make sure the
sound function is enabled and that settings for
I/O address, Interrupt level and DMA are correct
for your software and do not conflict with other
hardware devices that you may have connected
to the computer.
If problems persist, contact your dealer.
Procedure
Check for a firm cable connection between the
USB ports on the computer and the USB device.
Make sure the USB device drivers are properly
installed. Refer to your Windows documentation
for information on checking the drivers.
If you are using an operating system that does
not support USB, you can still use a USB mouse
and/or USB keyboard. If these devices do not
work, make sure the USB KB/Mouse Legacy
Emulation item in HW Setup is set to [Enable].
If problems persist, contact your dealer.
Troubleshooting
Control
Mouse to
Control
Mouse to
8-11