Sony VGN-FJ300 Series User Manual page 140

How do I change the screen resolution on my TV screen?
Your TV screen may not show the whole screen image of a video if the screen resolution is set larger than 1024 x 768.
Adjust the screen resolution to 1024 x 768 or smaller.
If you are using the AV Out jack, plug the audio-video (AV) cable into your computer before you start it.
To change the video resolution, follow these steps:
1 Right-click the desktop, and select Properties from the shortcut menu.
2 Select the Settings tab.
3 Move the screen resolution slider to the left to reduce the size and to the right to increase the size of the screen
resolution.
How do I switch the display output from my computer screen to TV?
Press the Fn+F7 keys to view the image either on your computer screen or on your TV. See Combinations and Functions
with the Fn Key (page 27)
Why doesn't my computer screen display a video?
If the external display is selected for the display output with the Fn+F7 keys and the external display is disconnected, you
cannot display a video on your computer screen. Stop video playback, press the Fn+F7 keys to change the display output to
the computer screen, and then restart video playback.
What should I do if my computer screen is dark?
Press the Fn+F6 keys to brighten your computer screen.
for more information.
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Troubleshooting