Sony PCG-VX89 VAIO User Guide (primary manual) User Manual page 64

VAIO Computer Quick Start
Why did the computer (LCD) screen go blank?
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Your computer screen may go blank if the computer has lost power or is in a
power saving mode (Standby or Hibernate).
❑
Make sure the computer is plugged into a power source and is turned on.
The power indicator on the computer will be on if the computer is on.
❑
Make sure the battery is inserted properly and is charged.
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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 (such as TV), press and hold the
Fn key while you press F7 several times.
Why don't my changes appear on the computer (LCD) screen?
You may need to refresh the computer screen. Press the Windows key and press
the D key twice.
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