Sony VAIO VGN-UX100 Series User Manual page 164

Why can't I rotate my screen view with the Rotate button on VAIO Touch Launcher?
The color quality of the LCD screen may not be appropriate.
To rotate the screen view, you must select Medium (16 bit) or Highest (32 bit) for Color quality on the Settings tab on
the Display Properties window. To change the color quality, follow these steps:
1 Click Start and then Control Panel.
2 Click the Appearance and Themes icon.
3 Click the Display icon.
4 Click the Settings tab and select appropriate color quality from the Color quality drop-down list.
Some software may not support the rotated screen view. Use your computer in the horizontal orientation to use such
software.
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Troubleshooting