Is The Notebook Screen Blank - HP Compaq NC4200 Getting Started Manual

Troubleshooting

Is the Notebook Screen Blank?

If you have not turned off the notebook but the screen is blank,
the notebook might be in standby or hibernation, or not set to
display the image on the notebook screen.
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To resume from standby or restore from hibernation, briefly
slide the power switch.
Standby and hibernation are energy-saving features that can
be initiated by the system while the notebook is in Windows
but is not in use.
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For more information about standby and hibernation, refer
to the Hardware and Software Guide.
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To switch the image to the notebook screen, press
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A–4
When standby is initiated, the power/standby lights blink,
your work is saved in random access memory (RAM), and
the screen clears.
In some software, including your Windows operating
system, the term standby is replaced by the term sleep.
When hibernation is initiated, your work is saved to a
hibernation file on the hard drive, the notebook shuts
down, and all power lights are turned off.
On most notebook models, when an optional external
display device, such as a monitor, is connected to the
notebook, the image can be displayed at any time on
the notebook screen, the external display, or on both the
notebook screen and the external display simultaneously.
When you press fn+f4, the image is switched among the
notebook, one or more external display devices, and
simultaneous display.
On some notebook models, the function of fn+f4 is
determined by the software you are using. For information
about the fn+f4 functions on your notebook, refer to the
hotkeys section of the Hardware and Software Guide.
fn+f4.
Getting Started