Sony PCG-R505ELP VAIO User Guide (primary manual) User Manual page 125

Troubleshooting the Mouse and Touchpad
My mouse does not work.

If you are using an optional Sony PCGA-UMS1 series USB mouse, verify the mouse is plugged into the USB port. See
Connecting a USB Device

If you are still experiencing problems, use your supplied Application Recovery CD to reinstall the mouse drivers. See
Using the Application Recovery CD(s)
for more information.
for more information.
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