Sony VGN-TXN10 What should I do if the external display stays blank, What should I do if the LCD brightness of my computer screen changes

n182 N

Troubleshooting

What should I do if the LCD brightness of my computer screen changes?

The LCD brightness setting, adjusted with the Fn+F5/F6 keys, is temporary and this adjustment is overridden by the setting on the VAIO Power Management tab when another power scheme is selected. To save this preference for the brightness, follow these steps:

✍

To do the following procedure, you must have administrator rights on your computer.

1Click Start and then Control Panel.

2Click Performance and Maintenance.

3Click Power Options.

4Select the tab for power scheme settings.

5Select the desired power scheme from the drop-down list.

6On the VAIO Power Management tab, select No change for LCD Brightness.

7Click OK.

The preference for the LCD brightness adjusted with the Fn+F5/F6 keys is saved and the brightness of your computer screen remains unchanged regardless of operating conditions.

What should I do if the external display stays blank?

If you cannot change the display output with the Fn+F7 keys, you need to change the settings for the external display with VAIO Central. To change the settings, launch the VAIO Central, select the control item for the external display, and then cancel the check box for enabling the automatic function to select the external display for the output. Then, try the Fn+F7 keys to change the display output.