Sony PCG-SRX99 VAIO User Guide (primary manual) User Manual page 142

I want to change the video resolution of my display.
1.
Click Start on the taskbar, and then Control Panel.
2. Click Appearance and Themes, and then click the Display icon. The Display Properties dialog box appears.
3. Click the Settings tab.
4. Move the Screen resolution slider to change your video resolution.
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