Toshiba M400 - Portege - Core 2 Duo 1.83 GHz User Manual page 185

If you are using the built-in screen, make sure the display priority is
not set for an external monitor. To do this, press
simultaneously (once). If this does not correct the problem, press
and F5 simultaneously again to return the display priority to its
previous setting.
HINT: Holding the Fn key and pressing the F5 key several times will
advance you through the display options.
If you are using an external monitor:
❖
Check that the monitor is turned on.
❖
Check that the monitor's power cord/cable is firmly plugged
into a working power outlet.
❖
Check that the cable connecting the external monitor to the
computer is firmly attached.
❖
Try adjusting the contrast and brightness controls on the
external monitor.
❖
Press
Fn
priority is not set for the built-in screen.
The screen does not look right.
You can change the display settings by clicking a blank area of the
desktop with the secondary control button, then clicking
Personalize. This opens the Personalization window. Click
Windows Color and Appearance to choose the colors for the
screen. Click Display settings to choose the screen resolution.
The built-in screen flickers.
Some flickering is a normal result of the way the screen produces
colors. To reduce the amount of flickering, try using fewer colors.
To change the number of colors displayed:
1 Right-click in a blank area of the Windows
2 Click Personalize, and then Display Settings.
3 Change the Colors option and click OK.
For more information see Windows
A message displays saying that there is a problem with your
display settings and that the adapter type is incorrect or the
current settings do not work with your hardware.
Reduce the size of the color palette to one that is supported by the
computer's internal display.
Resolving a hardware conflict
and simultaneously to make sure the display
F5
If Something Goes Wrong
®
Help.
185
and
Fn F5
®
desktop.
Fn