Troubleshooting External Displays - Sony PCG-K415B User Manual

Troubleshooting external displays

I cannot use the Plug and Display function (VGN-A series)
Depending on the external display or the way it is connected, the Plug and Display function may not be available.
Use the shortcut key with the Fn key to select the output destination.
I cannot display contents on two or more displays at the same time
You cannot display contents on multiple external displays at the same time.
Select one of the external displays.
The external display with the DVI-D connector does not display properly (VGN-A series)
See the printed Troubleshooting Guide first to solve your problems. If the problem persists, proceed as follows:
1 Click Start and then Control Panel.
The Control Panel window appears.
2 Click the Appearance and Themes icon.
3 Click the Display icon.
The Display Properties window appears.
4 Click the Settings tab.
5 Click Advanced.
The properties window appears.
6 Click Options.
7 Confirm that the button for Alternate DVI operational mode is selected. If not, click to check the button.
8 Click to check the button for Reduce DVI frequency on high-resolution displays.
The warning message window appears.
9 Click Yes.
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Connecting peripheral devices