Sony PCG-GRT100K - Manual (Page 213)

Touchpad
What do I do if the touch pad does not work?
 Try restarting your computer. Follow these steps:
1. Press the Windows key .
2. Press U. The Shut Down Windows dialog box opens.
3. Press R to restart the computer, and press Enter.
 If the computer does not restart,
1. Press the Ctrl+Alt+Delete keys simultaneously. The Windows Security dialog box appears.
2. Press the Right Arrow key to select Shut Down.
3. Press Enter.
4. Press R and then Enter to restart the computer.
 If you still cannot restart your computer, press and hold the power button to turn off the computer.
 If the pointer does not move while playing a disc, press the Ctrl+Alt+Delete keys simultaneously to stop playback
and restart the computer.
 If you are still experiencing problems, make sure another mouse is not installed.
Page 213