Panasonic Toughbook CF-50 Series Reference Manual page 53

Dealing with Problems
Starting Up (continued)
When the previous item
is not the cause
Display
No display after powering
on
The power has not been
turned off, but after a cer-
tain period of time, there
is no display
The cursor cannot be
controlled properly
An afterimage appears
(e.g., green, red, and blue
dots remain on the dis-
play) or there are dots not
displaying the correct
colors
The screen becomes dis-
ordered
The external display no
longer displays properly
Press F9 in the Setup Utility (
settings to their default values (except the password settings).
Try removing all peripheral devices.
Check a disk error using the following procedure.
Windows 2000
1 Select [Local Disk(C:)] with the right button in [My Computer], and select [Properties].
2 Select [Tools] - [Check Now].
3 Select [Start] after selecting required items in [Check disk options].
Windows XP
1 Select [Local Disk(C:)] with the right button in [start] - [My Computer], and select [Properties].
2 Select [Tools] - [Check Now].
3 Select [Start] after selecting required items in [Check disk options].
At start-up, press F8
When there is no display to an external display,
• Check your cable connection to the external display.
• Confirm your display is powered on.
• Check the settings for your external display.
Try switching the display by pressing
When displaying only through an external display, if the computer is shut down by
using the standby or hibernation function, there will be no display on the LCD
unless the external display is connected when operations are resumed. In this
case, connect the external display or press
Has the computer been set to the power-saving mode?
To resume operation of your computer from the condition the power of the display
is off (for energy conservation purposes), press any key unrelated to the direct
triggering of a selection, like Ctrl .
To save power, your computer may have automatically entered the standby mode
(power indicator blinks green) or hibernation mode (power indicator turns off). In
such cases, press the power switch.
If you are using an external mouse, ensure that the external mouse has been
connected correctly.
Restart the computer by using the keyboard (Press
[Restart] with
If the computer does not respond to keyboard commands, read "Computer hangs"
( page 57).
If an image is displayed for a prolonged period of time, an afterimage may appear. This is
not a malfunction. The afterimage will disappear when a different screen is displayed.
High-precision and advanced technologies are necessary in the production of color
liquid crystal displays (color LCDs). Therefore, if 0.002% or less of the picture
elements either fail to light or remain constantly lit (that is, more than 99.998% of
elements are functioning properly), no defect is considered to exist.
Changing the number of colors of the display may affect the screen. Restart the computer.
Windows XP
When using Dualview, use the same display colors for the external display as
those used by the LCD.
When an external display not compatible with the power saving mode is used with
the computer, the external display may no longer display properly when the computer
enters the condition the power of the display is OFF (for energy conservation pur-
poses). In such cases, turn off the power to the external display.
(Advanced)
page 43). This will restore the Setup Utility's
to operate the computer in the safe mode.
Fn + F3 .
Fn + F3 .
, then press Enter ).
53
, U , and select