Sony PCG-R505ELK - Manual (Page 179)

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