Sony VAIO PCV-RX490TV - Manual (Page 120)

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118
Topic: How do I change the video resolution of my display?
1 From the Start menu, select Settings, and then select Control Panel.
2 Click the Display icon and select the Settings tab.
3 Move the Display area slider to change the resolution.
4 Click OK.
Topic: Why is there no sound in any application?
There are independent controls for your system volume.
❑ Check that the speakers are plugged into the HEADPHONES jack.
❑ If the speakers have a mute button, make sure it is off.
❑ If the speakers are powered by batteries, check that the batteries are inserted
properly and that they are charged.
❑ If the speakers use an external power source, make sure that the power cord
is plugged into a grounded wall outlet or power strip.
❑ If the speakers have their own volume control, check the volume level.
❑ If the program you are using has its own volume control, check that the
volume is turned up.
❑ Check the volume controls in the application, in the audio mixer, and in
Windows. There is a volume control
icon on the Windows
®
taskbar. Click
the icon and slide the level bar up to increase the volume.
❑ Check that the Mute check box is not selected in the Windows volume
control .
❑ If you connected headphones to the computer, you will not hear sound from
the speakers.
✍
You may need to reinstall the sound drivers. See “Using the Driver Recovery CD” in
this manual.