HP Compaq nx9420 and nw9440 Notebook PC - Getting Started - Enhanced for Accessibility Windows Vista

Troubleshooting
The suggestions below may help you determine why the
computer screen is blank:
■ To exit Sleep or Hibernation, briefly press the power button.
Sleep and Hibernation are energy-saving features that can
turn of
f the display. Sleep and Hibernation can be initiated by
the system while the computer is on but not in use, or when
the computer has reached a low battery level. To change these
and other power settings, select Start > Control Panel >
System 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.
Is software functioning abnormally?
If the software becomes unresponsive or responds abnormally:
■ Restart the computer by clicking Start, clicking the arrow
next to the Lock button, and then clicking Restart.
If you cannot restart the computer using this procedure, refer
to the ne
xt section, “Is the computer turned on, but is not
responding?”
■ Run a virus scan. For information about using the antivirus
resources on your computer, refer to “Protect the computer
from viruses” in Chapter 2, “Next steps.”
Getting Started 3–3