Troubleshooting
What should I do if the Fn+F7 keys do not switch the display output to the external display connected to the monitor (VGA) port on my computer?
When your computer is attached to the optional multi function bay docking station, the monitor (VGA) port on your computer is disabled. Thus, pressing the Fn+F7 keys toggles between the computer screen and the external display connected to the monitor (VGA) port on the docking station.
What should I do if the external display stays blank?If you cannot change the display output with the Fn+F7 keys, you need to change the settings for the external display with VAIO Central. To change the settings, launch the VAIO Central, select the control item for the external display, and then cancel the check box for enabling the automatic function to select the external display for the output. Then, try the Fn+F7 keys to change the display output.