Panasonic Toughbook CF-74CCB02BM Operating Instructions Manual page 24

Troubleshooting (Basic)
Starting Up
Cannot resume.
Other startup problems.
Shutting down
Windows does not shut
down.
Display
No display.
The screen is dark.
The LCD brightness changes
a number of times when the
AC adaptor is disconnected.
Image colors are not repro-
duced as expected when
displaying photographs or
other images.
The screen is disordered.
24
An error may occur when the computer automatically enters the standby or hibernation
mode while the screensaver is active. In this case, turn off the screensaver or change
the pattern of the screensaver.
F9 in the Setup Utility (
Press
Utility settings (excluding the passwords) to the default values. Start the Setup Utility and
make the settings again.
Remove all peripheral devices.
Check to see if there was a disk error.
A Click [start] - [My Computer] and right-click [Local Disk(C:)], and click [Properties].
B Click [Tools] - [Check Now].
C Select the option in [Check disk options] and click [Start].
Start the computer in Safe Mode and check the error details. When the [Panasonic] boot
*1
screen disappears at startup, press and hold
Menu is displayed.
*1
When [Password on boot] is set to [Enable] in the [Security] menu of the Setup Utility,
[Enter Password] appears after the [Panasonic] boot screen disappears. As soon as you
enter the password and press
Remove the USB device and the ExpressCard.
Wait one or two minutes. It is not a malfunction.
The external display is selected. Press
play has been switched completely before pressing
When using an external display,
• Check the cable connection.
• Turn on the display.
• Check the settings of external display.
The display is turned off by the power-saving function. To resume, do not press the direct
selection keys, but press any other key like
The computer entered standby or hibernation by the power-saving function. To resume,
press the power button.
The screen is darker when the AC adapter is not connected. Press
the brightness. As you increase the brightness, battery consumption increases.
You can separately set the brightness for when the AC adaptor is connected and when
not connected.
Intel(R) Display Power Saving Technology is active and automatically changes the LCD
brightness. This is not a malfunction.
Remove the check mark of [Intel(R) Display Power Saving Technology].
A Select [start] - [Control Panel] - [Other Control Panel Options] - [Intel(R) GMA Driver
for Mobile].
B Select [Display Settings] - [Power Settings].
Changing the number of display colors and resolution may affect the screen. Restart the
computer.
Connecting/disconnecting an external display may affect the screen. Restart the com-
puter.
When using Simultaneous display, set the same display colors for the external display as
those for the LCD.
When using Simultaneous display, do not press
Enable or disable Simultaneous display, and soon restart the computer.
page 22 "To start the Setup Utility") to return the Setup
F8 until the Windows Advanced Options
Enter , press and hold F8 .
Fn + F3 to switch the display. Wait until the dis-
Fn + F3 again.
Ctrl .
Fn + F3 .
Fn + F2 and adjust