Toshiba 1955 The screen does not look right., The built-in screen flickers.

216 If Something Goes Wrong
Resolving a hardware conflict
5.375 x 8.375 ver 2.1.2
If you are using the built-in screen, make sure the display
priority is not set for an external monitor. To do this, press Fn
and F5 simultaneously (once). If this does not correct the
problem, press Fn and F5 simultaneously again to return the
display priority to its previous setting.
If you are using an external monitor:
❖Check that the monitor is turned on.
❖Check that the monitor’s power 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 and F5 simultaneously to make sure the display
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 Properties. This opens the Display Properties dialog
box. The Appearance tab of this dialog box allows you to
choose the colors for the screen. The Settings tab allows you
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:
1Point at the desktop and click with the secondary button.
2Click Properties, and then the Settings tab.
3Change the Colors option and click OK.
For more information, see Windows® Help.