The touch pad is disabled.
Press the Fn+F1 keys to enable the touch pad. See Enabling/Disabling the Touch Pad for more information.
Alternatively, start VAIO Control Center, then enable the touch pad. To start VAIO Control Center, see Searching/Starting Apps, Settings, or Files.
If a mouse is connected to your VAIO computer, disconnect it.
See Using the Touch Pad for information on how to use the touch pad.