HP 430se - Manual (Page 31)

Chapter 4 | Learning about the buttons, hard icons, and settings| 25
2. Adjust the contrast, brightness, and volume sliders, and
then select or deselect the Mute check box to mute or
restore the system volume. Or simply select one of the
four preset profiles.
You can adjust brightness, contrast, and volume by using the
Action button. Rock it to cycle through the profiles, and press
it to select the preferred one.
To change the preset profiles
1. Open HP settings and tap the Settings tab.
2. Select the radio button of the profile you want to change.
3. Adjust sound, brightness, and contrast sliders to your
preference.
4. Tap OK to save the changes and exit, or tap the Close
button (X in the upper right corner) to abandon the
changes.
Settings tab