Sony PCG-FXA59 - Manual (Page 95)

Troubleshooting the LCD Screen
My LCD screen is blank.
 Check that the notebook is plugged into a power source and is turned on.
 Check that the power indicator on the notebook is on.
 Check that the battery pack is inserted properly and is charged.
 The notebook may be in LCD (Video) Standby mode. Press any key to activate the screen.
 The display mode may be set to external display mode. Press and hold the Fn key while pressing F7 several times.
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