Sony PCG-R505GL - Manual (Page 176)

VAIO Computer Quick Start
176
❑ Make sure the battery is inserted properly and is charged.
❑ If the computer is in LCD (Video) Standby mode, press any key to
activate the computer screen.
❑ If the display mode is set to external display, press and hold the Fn key while
you press F7 several times.
Why don’t my changes appear on the computer screen (LCD)?
You may need to refresh the computer screen. Press the Windows key and
press D twice.