Troubleshooting
Is the computer screen blank?
If you have not turned off the computer but the screen is blank,
the computer may be in standby or hibernation, may not be set to
display the image on the computer screen, or the display switch
may not be functioning properly.
The suggestions below may help you determine why the
computer screen is blank:
■� To resume from standby or restore from hibernation,
briefly press the power button.
Standby and hibernation are energy-saving features that can
turn off the display. Standby and hibernation can be initiated
by the system while the computer is in Microsoft®
Windows® but is not in use, or when the computer has
reached a low-battery condition. To change these and other
power settings, select Start > Control Panel > Performance
and Maintenance > Power Options.
■ To transfer the image to the computer screen, press fn+f4.
On most models, when an optional external display device,
such as a monitor, is connected to the computer, the image
can be displayed on the computer screen or the external
display, or on both devices simultaneously. When you press
fn+f4 repeatedly, the image alternates among the computer
display, one or more external display devices, and
simultaneously displays on all devices.
■� Press the display switch on the computer to confirm that it
moves freely.
The display switch is normally located on the upper-left
corner of the keyboard.
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