Why can't i use my touch panel – Sony VGN-UX490N User Manual
Page 167
Troubleshooting
What should I do if the LCD brightness of my screen changes?
The LCD brightness setting, adjusted with VAIO Touch Launcher, is temporary and may be restored to the original setting
when your computer returns to Normal mode from Sleep or Hibernate mode. To save your preference for the brightness,
follow these steps:
1
Right-click the power status icon on the taskbar and select Power Options.
2
Click Change plan settings under the current power plan.
3
Click Change advanced power settings.
The Power Options window appears.
4
Select the Advanced settings tab.
5
Double-click Display.
6
Adjust the LCD brightness setting in the item for brightness adjustment.
Why can't I use my touch panel?
❑ The power switch may be in the HOLD position. Slide up the power switch (in the direction of f on the switch) to release
the switch.
❑ The touch panel may be disabled.
Use VAIO Control Center to enable the touch panel. See Setting Up Your Computer with VAIO Control Center
and find out more in its help file.